Kaźmierczyk, Stanisław. “About Identity of Law in Relation to Its Quality”. Acta Universitatis Lodziensis. Folia Iuridica, no. 74 (January 1, 2015): 201–219. Accessed December 7, 2025. https://www.czasopisma.uni.lodz.pl/Iuridica/article/view/19611.