Pietrzak, Michał, and Aleksandra Chlebicka. “Gemeinschaft Versus Gesellschaft: Cooperatives and the Problem of Free-Riding in the Provision of Collective Goods”. Social Entrepreneurship Review 2 (December 31, 2023): 27–46. Accessed April 3, 2025. https://ser.uek.krakow.pl/index.php/ser/article/view/158.