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3. The European Parliament in Times of EU Crisis
4. Becker, S., Bauer, M. & De Feo, A. (2017). The New Politics of the European Union Budget, Nomos, ISBN 978-3-8487-3500-6 (Print), 978-3-8452-7803-2 (ePDF). https://www.nomos-shop.de/_assets/downloads/9783848735006_lese01.pdf