This book contains a collection of economic and legal essays written by academics and practitioners who contributed to the elective Master's course 'State Aid and Public Procurement in the European Union' at Maastricht University, and to two conferences on State aid and public procurement organised in Maastricht in 2013 and 2014. The course, the conferences and this book aim to provide stakeholders - students, but also academics, practitioners, civil servants, and consumers - with a better knowledge of the EU rules on public procurement and State aid. By treating these two legal fields in one volume, the book also intends to draw attention to the largely unexplored links and interfaces between public procurement and State aid rules, which both aim to complete the internal market and to prevent the distortion of competition. Both fields also share common concepts, and furthermore observance of public procurement rules may limit the risk of individual transactions being qualified as State aid (as the Altmark case law and related Commission packages illustrate). In 2011, the European Commission's Education, Audiovisual and Culture Executive Agency EACEA recognised the course 'State Aid and Public Procurement in the European Union' as a Jean Monnet European Module (Lifelong Learning Programme).

This liber amicorum is dedicated to Prof. dr. Hildegard Schneider who has shaped the study of European migration and asylum law and was a pioneer in fighting against legal and practical barriers to free movement. Hildegard's profound impact on the faculty of law of Maastricht University is well noticeable due to her multidisciplinary research and teaching initiatives, the creation of several multidisciplinary institutes and because of her early emphasis on the societal relevance of legal research. Besides being an excellent academic and an exquisite professional in the field of European law, Hildegard is a true master of the 'art' of crossing borders. She is not only an expert in migration law, but has a profound knowledge of 'art law' as well, specifically when it comes to the import and export of cultural goods. In this book, we have gathered a collection of academic contributions about topics that are close to her heart written by persons that are dear to her. We hope we will continue crossing Hildegard many times in the future, wherever it may be. The contributors: Louis Berkvens, Anna Bolz, Sergio Carrera, Monica Claes, Sjoerd Claessens, Marie-Sophie de Clippele, David de Groot, Anna de Jong, Bruno De Witte, Bert Demarsin, Katharina Eisele, Michael Faure, Sacha Garben, Joel Gunthardt, Kathrin Hamenstadt, Viola Heutger, Tiana Isacu, Patricia Jeronimo, Moritz Jesse, Lavinia Kortese, Katja Lubina, Pauline Melin, Pim Mertens, Yuri Michielsen, Anke Moerland, Peter-Christian Muller-Graff, Phedon Nicolaides, Niels Philipsen, Sarah Schoenmaekers, Jan Smits, Martin Unfried, Stefaan Van den Bogaert, Anne Pieter van der Mei, Bastiaan van der Velden, Frans van der Velden, Lars van Vliet, Zvezda Vankova, Ellen Vos and Lisa Waddington. About the Maastricht Law Series: Created in 2018 by Boom juridisch and Eleven International Publishing in association with the Maastricht University Faculty of Law, the Maastricht Law Series publishes books on comparative, European and International law. The series builds upon the tradition of excellence in research at the Maastricht Faculty of Law, its research centers and the Ius Commune Research School. The Maastricht Law Series is a peer reviewed book series that allows researchers an excellent opportunity to showcase their work.