Doktór, Kazimierz, and Waldemar Stelmach. “Activists Evaluation of Managerial Deficiencies in OPZZ Functioning”. Acta Universitatis Lodziensis. Folia Oeconomica, no. 288 (January 1, 2013): 25–33. Accessed December 5, 2025. https://www.czasopisma.uni.lodz.pl/foe/article/view/28081.