Dr. Volodymyr Bilotkach was visiting reseacher at ZEW’s Research Group "Competition and Regulation" from October 7-11, 2013. He is senior lecturer in economics at Newcastle University Business School, UK. He also advised the Netherlands Competition Authority and the European Commission on policy issues in the aviation sector. His research focuses on the aviation sector of economy. During his stay, he worked together with ZEW researchers on projects addressing competition processes in aviation markets. He also held a ZEW Research Seminar titled "Market-Sharing Agreements: Empirical Evidence from the US Airline Industry" on October 10, 2013.