1. R. Petrov, G. Gabrichidze, P. Kalinichenko, “Constitutional Orders of Non-Recognised Entities in Georgia and Ukraine. Can façade Constitutions Ensure Adequate Protection of Human Rights?”, 45(1) Review of Central and East European Law (Brill, Nijhoff) (2020) 92-125.
  2. R. Petrov, “EU-Ukraine Association Agreement’s effective implementation into the legal order of Ukraine. Challenges and Successes”, 6 European Studies (The Review of European Law, Economics and Politics) (2019) 155-174.
  3. R. Petrov, P. Kalinichenko, M. Karliuk, “International Law in Russia, Ukraine and Belarus: Modern Integration Projects”, 7(3) Russian Law Journal (2019) 107-133.
  4. R. Petrov, “EU Common Values in the EU-Ukraine Association Agreement: Archor to Democracy?”, 8(1) Baltic Journal of European Studies (2018) 49-62.
  5. R. Petrov, “The Impact of the -Ukraine Association Agreement on Constitutional Reform and Judicial Activism in Ukraine”, 43(2) Review of Central and East European Law (2018) 99-115.R. Petrov, ‘The Constitutional Order of Ukraine and its Adaptability to the EU-Ukraine Association Agreement’, in: R. Petrov, P. Van Elsuwege (eds.) Post-Soviet Constitutions and Challenges of Regional Integration (Routledge Press, 2017), pp. 91-104.
  6. R. Petrov, Legal perspectives on the study of the European Neighbourhood Policy’ co-authored with Peter Van Elsuwege in Tobias Schumacher, Andreas Marchetti, Thomas Demmelhuber (eds.) The Routledge Handbook on the European Neighbourhood Policy (Routledge Press, 2017), 105-115.
  7. R. Petrov, ‘Human Rights in Association Agreements with Ukraine, Moldova and Georgia’ in S. Lorenzmeier, V. Sancin (eds.) Contemporary Issues of Human Rights Protection in International and National Settings, (NOMOS, Baden-Baden, 2017), 209-228.
  8. R. Petrov, ‘Verfassungsrechtliche Fragen hinsichtlich der Umsetzung der Assoziierungskommen zwischen der EU und der Ukraine, Moldawien und Georgien’, in S. Lorenzmeier, H. Folz (eds.) Recht und Realität, (NOMOS, Baden-Baden, 2017), 361-377