Becker, J., A. Braun, L. Bunge, P. Geißler, K. Jurkat, F. Kaufmann, I. Makhoul, J. Stiebitz, M. Tabiou, and B. Ucar. “Social Business, Cooperatives and Trade Unions in South Europe”. KULT_online, no. 44, Oct. 2015, doi:10.22029/ko.2015.919.