Furmańczyk, Joanna, and Jerzy Kaźmierczyk. “The Involvement of Academic Teachers in Business Activity (Poznań University of Economics and Business Example)”. DEMO 5, no. 3 (March 31, 2017): 100–117. Accessed May 14, 2026. https://ojs34.fimagis.pl/index.php/demo/article/view/977.