Matyjas-Łysakowska, P., & Maroń, A. (2023). Application of an employment contract for a trial period in the light of EU and national regulations. In T. Duraj (Ed.), & (Ed.), The use of atypical forms of employment in violation of labour and social security laws - diagnosis and prospects for the future (pp. 83-96). Lodz University Press. https://doi.org/10.18778/8331-395-5.07