M. Gierczak, U. Bretschneider, P. Haas, I. Blohm, and J. Leimeister. Crowdfunding in Europe – State of The Art in Theory And Practice; FGF Studies in Small Business and Entrepreneurship, Springer Science + Business Media, Cham, (2015)
U. Bretschneider, M. Gierczak, A. Sonnick, and J. Leimeister. Marktplätze im Umbruch - Digitale Strategien für Services im Mobilen Internet (ISBN: 978-3-662-43782-7), Springer Vieweg, Wiesbaden, (2015)
M. Gierczak, M. Söllner, and J. Leimeister. DIBME 2013 Pre-ECIS Workshop on the Digitization in Business Models and Entrepreneurship, Utrecht, The Netherlands, (2013)