Our MAYGREEN team has employees in Düsseldorf and Regensburg. The team is interdisciplinary and consists of lawyers, tax consultants, business and economists and experts from the fields of finance and administration.
Would you also like to become part of the team? Apply here.
Möhlenkamp; The taxation of hydrogen under the Energy Tax Directive, taking into account the implementation into national law, ZfZ.4 2025
Schulte-Beckhausen, Möhlenkamp; CBAM: From default values to real data, Energie, Markt, Wettbewerb (emw), August 2023
Möhlenkamp, Milewski (eds.); Commentary on energy and electricity tax, C.H. Beck Verlag 2020, 2nd edition Yellow Series
Schulte-Beckhausen/Karen Möhlenkamp/Stefanie Baron; Charging stations for e-vehicles on company premises: obligations under energy law and tax law, Betriebsberater 32/2019, 1815.
Möhlenkamp, comment on BFH decision of 15 September 2015 (VII B 164/14) Tax relief due to bad debt losses under Section 60 EnergieStG: ZfZ 2015, 465
Möhlenkamp, Editor IDW Assessment Handbook on Energy and Electricity Tax, Energy Management Systems and Energy Law Annual edition 2014, Annual edition 2015, Annual edition 2016, Annual edition 2017
Möhlenkamp, Intellectual Property and Value Added Tax, in Vögele (ed.), Intellectual Property, C.H. Beck Verlag, 2013
Möhlenkamp, Milewski (eds.); Commentary on energy and electricity tax, C.H. Beck Verlag 2012, 1st edition Yellow Series
Möhlenkamp, Tax Trap Waste - Energy Tax on Waste as Substitute Fuels BB-Special 1/2010
Möhlenkamp, Stolte; Erläuterungen, Abgrenzungen und Beispiele zu den begünstigten Prozessen und Verfahren nach § 51 EnergieStG und § 9a StromStG, in: Praxishandbuch, Die Besteuerung von Strom, Erdgas und Kohle, 2009;
Möhlenkamp, Masuch; Intra-Community chain transactions in the European Union taking into account the ECJ judgement in the EMAG case, UR-2009-0268
Möhlenkamp, Umsatzsteuer und Beteiligungen, Steuerberater-Jahrbuch 2007/2008 at the same time report on the 59th Fachkongress der Steuerberater Cologne, 23 and 24 October 2007
Möhlenkamp, Maunz Mindestbemessungsgrundlage - quo vadis?; At the same time a consideration of the consequences of the ECJ decision Hotel Scandic Gasabäck AB, UR-2006-0001
Möhlenkamp, VIP boxes in sports facilities and the 2006 Football World Cup Simplification regulations in the area of VAT are missing! DStR-2006-0981
Möhlenkamp, Gemeinnützigkeitsrecht der Kunst- und Kultureinrichtungen, Handbuch für Kultur-Management, Raabe, Fachverlag für öffentliche Verwaltung, 2005
Möhlenkamp, Application of the Sponsoring Decree to Professional Associations, NWB-0004-4823, NWB-2004-2513
Möhlenkamp, Reform of association law cuts secondary purpose privilege for associations: What economic activity will still be permitted in future? DB-2004-2737
Möhlenkamp, Effects of the ECJ judgement Kennemer Golf & Country Club on membership fees of professional associations, UR-2003-0173
Stiebitz (Möhlenkamp, née Stiebitz); Die Umsatzsteuer bei Geschäften der öffentlichen Hand, Deckmantel Daseinsvorsorge, Bundesverband der Deutschen Industrie (BDI) Hrsg. (2001)
Stiebitz (Möhlenkamp, née Stiebitz); Heinz Such (1910-1976). Ein Jurist zwischen bürgerlicher Rechtsdogmatik und sozialistischer Rechtsentwicklung (WS 1996/97) Published in the series "Arbeiten zur Geschichte des Rechts", ed. by Bernhard Diestelkamp, Jörn Eckert, Filippo Ranieri and Rainer Schröder, vol. 2, Weimar-Köln-Wien (Böhlau Verlag) 1999.
Schulte-Beckhausen, Sabine; Möhlenkamp, Karen: CBAM: From standard values to real data, Energie, Markt, Wettbewerb (emw), August 2023 (forthcoming)
Schulte-Beckhausen, Sabine: Commentary on the Energy Security Act (EnSiG) in Danner/Theobald, Energierecht, loose-leaf, as of November 2023.
Schulte-Beckhausen/Beyer, Die Rolle des Aufsichtsrats in der Energiewende, BOARD 1/2
Schulte-Beckhausen/Karen Möhlenkamp/Stefanie Baron; Charging stations for e-vehicles on company premises: obligations under energy law and tax law, Betriebsberater 32/2019, 1815.
Schulte-Beckhausen, Sabine; Hofmann, H.: Die Quadratur der Glaskugel: Zum Auswahlkriterium „Netzentgelte“ bei Konzessionsvergaben im Energiebereich. In: RdE 2015, Heft 1/2.
Schulte-Beckhausen, Sabine; C. Schneider; T. Kirch: Unionsrechtliche Aspekte eines EEG 2.0. In: RdE 2014, S. 101-107.
Schulte-Beckhausen, Sabine: Smarte Regulierung für Smarte Meter. In: KSzW, 2011, S. 285-292.
Schulte-Beckhausen, Sabine: Netzkooperationen: Regulierung, politische Vorgaben, Szenarien, in: RdE März 2011, 77.
Schulte-Beckhausen, Sabine; Ungemach, M.: „Wirtschaftliche Unzumutbarkeit“ und allgemeine Netzanschlusspflicht unter den Prämissen der Anreizregulierung. In: Festschrift G. Kühne, Frankfurt a. M., 2009, S. 365-384.
Hegel/Schulte-Beckhausen, Kooperationen in der zweiten Phase der Liberalisierung, emw Heft 05/2006, 30.
Hegel/Schulte-Beckhausen, Öffentlich-private Partnerschaften - Die Vorteile überwiegen, in: der gemeinderat 12/2005, 17.
Hegel/Karbenn/Schulte-Beckhausen, Privatisierungen im Utility-Sektor, in: Ganzheitliches Corporate Finance Management (Hrsg.: Wiedmann/Heckemüller), Wiesbaden 2003.
Schulte-Beckhausen, Energy Trading in the EU: The Commoditization of Electricity and the Emergence for Energy Exchanges, in: Journal of Network Industries, Vol. 1 Nr. 3, 2000
Schulte-Beckhausen, Energieversorgung als öffentliche Aufgabe im europäischen Ordnungsrahmen, in; Wettbewerb in Europa und die Erfüllung öffentlicher Aufgaben (Hrsg. Brede et. al), Baden-Baden 2000/2001.
Schulte-Beckhausen, Kommunale Ver- und Entsorgungswirtschaft, in: Die öffentliche Wirtschaft in Deutschland, Bestandsaufnahme zu Beginn des 21. Jahrhunderts (CEEP), Berlin 2001
Schulte-Beckhausen, Dienstleistungen von allgemeinem wirtschaftlichem Interesse (Hrsg. CEEP), Brüssel 2000
Brüls/Schulte-Beckhausen, La réorganisation des marchés de l`électricité : l’exemple allemand - Déregulation ou libéralisation ?, in : DAOR (Le droit des affaires) 55, 2000, 181
Schulte-Beckhausen, Kommentierung des Energiekartellrechts (Wettbewerbsregeln des Vertrags zur Gründung der Europäischen Gemeinschaft), in: Hempel/Franke (Hrsg.), Loseblatt, 1999
Schulte-Beckhausen, Stromhandel - Möglichkeiten und Grenzen im neuen europäischen und nationalen Ordnungsrahmen für Energie, RdE 2/1999, 51
Schulte-Beckhausen, Rügelose Einlassung im Europäischen Zivilprozessrecht, Dissertation 1994.
European Energy Law, 214 pp., 2nd ed., Nomos 2024 (together with Daniela Winkler, Thomas Ackermann)
European Energy Law, 186 pp., Nomos 2021 (together with Daniela Winkler, Thomas Ackermann)
Reviews: Peter Hennig, Die Rezensenten, February 2021, available at: http://dierezensenten.blogspot.com/2021/02/rezension-europaisches-energierecht.html; Peter Salje, RdE 2021, 234; Alexander Schink, UPR 1/2022; Hans-Peter Schwintowski, EWeRK 2021, 63
Primary Law Obligations of the EU Member States to Expand Electricity Grids. At the Same Time a Contribution to the Discussion on an Original Performance Dimension of the Free Movement of Goods, Studies on European Law (EUR), 197 pp., Duncker & Humblot 2020, also doctoral thesis Basel/Cologne
Reviews: Achim-Rüdiger Börner, RdE 2020, 383; Mathias Cordero, EnWZ 11/2020, VIII; Fabian Möller, EuZW 2020, 772; Valerian von Richthofen, RdE 2020, 60; Reinhard Ruge, Der Staat 61 (2022) 2, 340; Ralf Schäfer, et 7/8 2020, 81
Section editor “Gas,” BeckOGK on Energy Law (formerly Berlin Commentary on Energy Law; general editors: Franz Jürgen Säcker, Markus Appel, Oliver Koch, Markus Ludwigs); commentaries in preparation (together with Oliver Koch)
EnergyClimate-Current, news service for energy and climate law (formerly EnergyCrisis-Current), available on Beck-Online and at www.enk-aktuell.eu (together with Boris Scholtka)
Energy Law: Cases and Solutions, 251 pp., Nomos 2022
Uberization and the Collaborative Economy, 178 pp., Éditions Panthéon-Assas 2020 (together with Araceli Turmo)
EnergyClimate-Current, news service for energy and climate law (formerly EnergyCrisis-Current), available on Beck-Online and at www.enk-aktuell.eu (together with Boris Scholtka)
Tendering Obligation and Tendering Law for Right-of-Way Usage Rights, EuroHeat&Power 9/2024, pp. 14–17
Tendering Obligation and Tendering Law for Right-of-Way Usage Rights for District Heating Pipes following BGH, Judgment of 05.12.2023 – KZR 101/20 – District Heating Network Stuttgart – Part 2, RdE 2024, pp. 289–296
Tendering Obligation and Tendering Law for Right-of-Way Usage Rights for District Heating Pipes following BGH, Judgment of 05.12.2023 – KZR 101/20 – District Heating Network Stuttgart – Part 1, RdE 2024, pp. 225–231
Exploring Regulatory Strategies for Accelerating the Development of Sustainable Hydrogen Markets in the European Union, Journal of Energy & Natural Resources Law 2024, Volume 42, 2024 – Issue 2, pp. 137–166 (together with Saskia Lavrijssen, in English)
Climate Theory as a Reminder for an Attentive and Critical Application of Comparative Law, Tilburg Law Review 2023, 28(1), pp. 26–30 (in English)
The Regulatory Framework for Hydrogen Networks. An Economic and Legal Classification against the Background of the Desired Market Ramp-Up, RdE 2021, pp. 135–141, also as EWI EWIR Policy Brief, November 2020, available at: https://www.ewi.uni-koeln.de/cms/wp-content/uploads/2020/11/EWI-EWIR-Policy-Brief-H2-Netzregulierung-20201102.pdf (together with Felix Berger, Dominic Lencz, Felix Mansius, David Schlund, Simon Schulte)
Shadow Rents and the Berlin Rent Cap, WuM 2021, pp. 73–79 (together with Felix Mansius)
The German Electricity Grid in the European Interconnection, RdE 2020, pp. 243–246
The EU Single Market and the Uniform Electricity Bidding Zone in Germany, EuZW 2018, pp. 491–495 (together with Carsten König)
Renewable Energies and "Legitimate Expectations" in Recent Arbitration Practice on the Energy Charter Treaty: The Decisions in the Charanne, Isolux, and Eiser Proceedings, RdE 2018, pp. 242–248 (together with Sebastián Mantilla Blanco)
The Obligation to Tolerate pursuant to § 36 para. 3 MsbG – a constitutional remark, ZNER 2017, pp. 95–101 (together with Arnulf Mallmann)
Smart Meters – Intelligent-Efficient Energy Management or Impermissible Interference with Privacy? An Assessment of the Compatibility of the Introduction of Intelligent Electricity Meters with the EU Charter of Fundamental Rights, RdE 2016, pp. 454–459
Electrabel v. Hungary: Current Developments in the Protection of Foreign Investments under the Energy Charter Treaty, KSzW 2016, pp. 179–187 (together with Sebastián Mantilla Blanco)
On the Implementation of Smart Meters in the European Union: Legal Considerations regarding Privacy and Personal Data Protection in Times of the Twin Transitions, in: Rafael Leal-Arcas (ed.), Research Handbook on EU Energy Law and Policy, 2nd ed., Edward Elgar Publishing 2024 (together with Brenda Espinosa Apráez, in English)
Expansion of Legal Protection in Competition Law through Private Enforcement, in: Claudia Seitz/Ralf Michael Straub/Robert Weyeneth (eds.), Legal Protection in Theory and Practice. Festschrift for Stephan Breitenmoser, Helbing Lichtenhahn Verlag 2022
Preface, in: Max Baumgart (ed.), Energy Law. Cases and Solutions, Nomos 2022
Introduction, in: Max Baumgart (ed.), Energy Law. Cases and Solutions, Nomos 2022
Case 10: Merger Control in the Energy Sector, in: Max Baumgart (ed.), Energy Law. Cases and Solutions, Nomos 2022
Case 11: Long-term Electricity Supply Contracts and Competition Law, in: Max Baumgart (ed.), Energy Law. Cases and Solutions, Nomos 2022
Avant-propos, in: Araceli Turmo (ed.)/Max Baumgart (co-ed.), Ubérisation et Économie Collaborative, Éditions Panthéon-Assas 2020 (together with Araceli Turmo; in French)
Innovations in the Transport Sector Under German Law, in: Araceli Turmo (ed.)/Max Baumgart (co-ed.), Ubérisation et Économie Collaborative, Éditions Panthéon-Assas 2020 (together with Martin Böttcher; in English)
The Rule of Law as a Condition for International Investment and Trade, in: Rafael Leal-Arcas (ed.), International Trade, Investment and the Rule of Law, Eliva Press 2020, pp. 67–83 (in English)
A (Legal) Challenge to Privacy: On the Implementation of Smart Meters in the EU and the US, in: Rafael Leal-Arcas/Jan Wouters (eds.), Research Handbook on EU Energy Law and Policy, Edward Elgar Publishing 2017, pp. 353–369 (also as preprint in: RELP 2017, Vol. 8 Iss. 1, pp. 19–29; in English)
Commentary on §§ 1, 1a, 2, 3 (Nos. 1, 2, 23, 30, 35, 36, 43a), 8–17 EEG 2023, in: Jan Henrik Klement/Ralf Müller-Terpitz (eds.), Nomos Commentary on Energy Law, Nomos 2024 (together with Valentin Kissling, in preparation)
Commentary on §§ 30–33 and 111 EnWG, in: Lukas Assmann/Max Peiffer (eds.), Beck’scher Online-Kommentar zum EnWG, 14th ed., as of 01.03.2025
Commentary on §§ 30–33 and 111 EnWG, in: Lukas Assmann/Max Peiffer (eds.), Beck’scher Online-Kommentar zum EnWG, 13th ed., as of 01.12.2024
Commentary on §§ 30–33 and 111 EnWG, in: Lukas Assmann/Max Peiffer (eds.), Beck’scher Online-Kommentar zum EnWG, 12th ed., as of 01.09.2024
Commentary on §§ 30–33 and 111 EnWG, in: Lukas Assmann/Max Peiffer (eds.), Beck’scher Online-Kommentar zum EnWG, 11th ed., as of 01.06.2024
Commentary on §§ 30–33 and 111 EnWG, in: Lukas Assmann/Max Peiffer (eds.), Beck’scher Online-Kommentar zum EnWG, 10th ed., as of 01.03.2024
Commentary on Article 29, in: Rafael Leal-Arcas (ed.), Commentary on the Energy Charter Treaty, Edward Elgar Publishing 2023 (in English)
Commentary on §§ 30–33 and 111 EnWG, in: Lukas Assmann/Max Peiffer (eds.), Beck’scher Online-Kommentar zum EnWG, 9th ed., as of 01.12.2023
Commentary on §§ 30–33 and 111 EnWG, in: Lukas Assmann/Max Peiffer (eds.), Beck’scher Online-Kommentar zum EnWG, 8th ed., as of 01.09.2023
Commentary on §§ 30–33 and 111 EnWG, in: Lukas Assmann/Max Peiffer (eds.), Beck’scher Online-Kommentar zum EnWG, 7th ed., as of 01.06.2023
Commentary on §§ 69 and 70 TKG, in: Franz Jürgen Säcker/Torsten Körber (eds.), TKG – TTDSG, Fachmedien Recht und Wirtschaft 2023
Commentary on §§ 30–33 and 111 EnWG, in: Lukas Assmann/Max Peiffer (eds.), Beck’scher Online-Kommentar zum EnWG, 6th ed., as of 01.03.2023
Commentary on §§ 30–33 and 111 EnWG, in: Lukas Assmann/Max Peiffer (eds.), Beck’scher Online-Kommentar zum EnWG, 5th ed., as of 01.12.2022
Commentary on §§ 30–33 and 111 EnWG, in: Lukas Assmann/Max Peiffer (eds.), Beck’scher Online-Kommentar zum EnWG, 4th ed., as of 01.09.2022
Commentary on §§ 30–33 and 111 EnWG, in: Lukas Assmann/Max Peiffer (eds.), Beck’scher Online-Kommentar zum EnWG, 3rd ed., as of 01.06.2022
Commentary on §§ 30–33 and 111 EnWG, in: Lukas Assmann/Max Peiffer (eds.), Beck’scher Online-Kommentar zum EnWG, 2nd ed., as of 01.03.2022
Commentary on §§ 30–33 and 111 EnWG, in: Lukas Assmann/Max Peiffer (eds.), Beck’scher Online-Kommentar zum EnWG, 1st ed., as of 15.07.2021
Commentary on Article 29, in: Rafael Leal-Arcas (ed.), Commentary on the Energy Charter Treaty, Edward Elgar Publishing 2018 (in English)
Special edition on the coalition agreement of CDU/CSU and SPD, EnK-Aktuell Issue 5/2025 (together with Boris Scholtka)
More Climate in the Basic Law, EnK-Aktuell Issue 4/2025 (together with Boris Scholtka)
The Energy Sector in the Sondierungspapier, EnK-Aktuell Issue 3/2025 (together with Boris Scholtka)
Will the 2025 Federal Election Be a Turning Point for Energy and Climate Policy?, EnK-Aktuell Issue 2/2025 (together with Boris Scholtka)
Between Hope and Fear, EnK-Aktuell Issue 1/2025 (together with Boris Scholtka)
The Year 2024: Important Steps in the Energy and Climate Transition, EnK-Aktuell Issue 14/2024 (together with Boris Scholtka)
Everything on Hold?, EnK-Aktuell Issue 13/2024 (together with Boris Scholtka)
EU State Aid Law Between Competition Protection and the Energy Transition, EnK-Aktuell Issue 12/2024 (together with Boris Scholtka)
Punitive Tariffs on Chinese Electric Cars, New Impulses for Renewables, EnK-Aktuell Issue 11/2024 (together with Boris Scholtka)
The Role of Antitrust Law in the Energy Transition and: Nuclear Power Continues to Play a Role in Europe, EnK-Aktuell Issue 10/2024 (together with Boris Scholtka)
Electricity Market Design, Power Plant Strategy, Hydrogen, EnK-Aktuell Issue 9/2024 (together with Boris Scholtka)
Hydrogen and Decarbonised Gas Market Package Published in the Official Journal, EnK-Aktuell Issue 8/2024
Summertime – Some Things Clarified, Others Remain Open, EnK-Aktuell Issue 8/2024 (together with Boris Scholtka)
Carbon Capture and Storage, Hydrogen, and Some News from the EU, EnK-Aktuell Issue 7/2024 (together with Eric Glattfeld)
Solar Package I, Federal Immission Control Act, Lead Markets, International Cooperation, EnK-Aktuell Issue 6/2024 (together with Boris Scholtka)
Solar Package I, Climate Protection Act, Internal Electricity Market, Climate Protection as a Human Right, EnK-Aktuell Issue 5/2024 (together with Boris Scholtka)
Unbundling in Natural Gas and Hydrogen Markets – Horizontal, Vertical, and Now Also Diagonal, EnK-Aktuell Issue 4/2024 (together with Susanne Wende)
Much in the Spirit of the Heating Transition, EnK-Aktuell Issue 4/2024 (together with Boris Scholtka)
Power Plant Strategy, Federal Court of Auditors, TenneT Takeover, Climate Protection Contracts, EnK-Aktuell Issue 3/2024 (together with Boris Scholtka)
Climate Targets, Power Plant Strategy, Hydrogen Projects, Net Zero Industry Act, Energy Justice, REMIT Violations, EnK-Aktuell Issue 2/2024 (together with Boris Scholtka)
EnergieKrise-Aktuell Becomes EnergieKlima-Aktuell, EnK-Aktuell Issue 1/2024 (together with Boris Scholtka)
The First Before the Second Step, EnK-Aktuell Issue 12/2023 (together with Boris Scholtka)
Amendment of the Energy Industry Act, Hydrogen, District Heating, Photovoltaic Strategy and More, EnK-Aktuell Issue 11/2023 (together with Boris Scholtka)
Is Climate Protection Stuck?, EnK-Aktuell Issue 10/2023 (together with Boris Scholtka)
Ownership Obligates, EnK-Aktuell Issue 9/2023 (together with Boris Scholtka)
(A) Topic? The End of Nuclear Energy in Germany., EnK-Aktuell Issue 8/2023 (together with Boris Scholtka)
New Impulses for Climate Protection, EnK-Aktuell Issue 7/2023 (together with Boris Scholtka)
Much New on Climate Protection, Electricity Market Design, and Building Efficiency, EnK-Aktuell Issue 6/2023 (together with Boris Scholtka)
Energy Price Caps, Energy Price Caps, Energy Price Caps, EnK-Aktuell Issue 5/2023 (together with Boris Scholtka)
New Developments, Deadlines, and BMWK's First Paper on Planned Changes to the Price Caps, EnK-Aktuell Issue 4/2023 (together with Boris Scholtka)
Price Cap Laws and the Ramp-Up of the Hydrogen Economy, EnK-Aktuell Issue 3/2023 (together with Boris Scholtka)
Energy Sector at its Limits, EnK-Aktuell Issue 2/2023 (together with Boris Scholtka)
New Developments in Wind Energy Law in North Rhine-Westphalia, EnK-Aktuell Issue 1/2023
Price Formation Between Competition and State Regulation, EnK-Aktuell Issue 9/2022 (together with Boris Scholtka)
The Natural Gas-Heating Price Cap Act Reaches the Bundestag, EnK-Aktuell Issue 8/2022 (together with Boris Scholtka)
The Amendment of Bavaria's 10H Distance Rule for Wind Turbines, EnK-Aktuell Issue 8/2022 (together with Valentin Kissling)
Price Formation in the Energy Market: December Aid, Price Caps for Electricity, Heat and Gas, and a Revenue Cap, EnK-Aktuell Issue 7/2022 (together with Boris Scholtka)
Daylight Saving Time Changes Are Also a Crisis Phenomenon, EnK-Aktuell Issue 6/2022 (together with Boris Scholtka)
Nothing Certain is Known! Or Maybe Yet?, EnK-Aktuell Issue 5/2022 (together with Boris Scholtka)
The Connection of EEG Plants under the EEG 2023, EnK-Aktuell Issue 4/2022 (together with Valentin Kissling)
It Also Depends on Each Individual, EnK-Aktuell Issue 4/2022 (together with Boris Scholtka)
Winter is Coming. Are We Prepared?, EnK-Aktuell Issue 3/2022 (together with Boris Scholtka)
Energy Law as the Law of Socio-Technical Change, EnK-Aktuell Issue 2/2022 (together with Boris Scholtka)
Welcome to the News Service of the Energy Crisis – EnK-Aktuell, EnK-Aktuell Issue 1/2022 (together with Boris Scholtka)
Berlin Rent Cap Overturned. What Does That Mean for Shadow Rents?, LTO, 23.4.2021, available at: https://www.lto.de/recht/hintergruende/h/mietendeckel-bverfg-gekippt-rechtslage-ansprueche-schattenmiete-rueckzahlung/ (together with Felix Mansius)
The Regulatory Framework for Hydrogen Networks, Guest Commentary, energate, 17.11.2020, available at: https://www.energate-messenger.de/news/207252/-der-regulierungsrahmen-fuer-wasserstoffnetze- (together with Simon Schulte)
Why the Federal Cartel Office is Interested in Data Protection, LTO, 22.6.2020, available at: https://www.lto.de/recht/hintergruende/h/bgh-facebook-bundeskartellamt-datenschutz-kartellrecht-massstab-marktbeherrschung-daten-social-media/ (together with Felix Berger)
