Sowińska-Olek, Monika. “The Admissibility of Contractual Limitation of the Principle of Freedom of Work in a Negative Context”. Acta Universitatis Lodziensis. Folia Iuridica 111 (July 30, 2025): 65–78. Accessed December 7, 2025. https://www.czasopisma.uni.lodz.pl/Iuridica/article/view/24449.