Bartkowiak M, Janik B. Comparative Analysis of the Social Resposibility Indices Respect, Ceerius and Vőnix. SOEP [Internet]. 2013 Sept. 30 [cited 2026 Nov. 12];1(9):s. 5-19. Available from: https://www.journals.ue.poznan.pl/soep/article/view/3255