Czekaj, Janusz. “The Methods of Job Security System As an Instrument for Employment Rationalization in the Management Subsystem on the Example of a Public Utility Company”. In Metody I Techniki zarządzania. Inspiracje Dla Teorii I Praktyki, edited by Małgorzata Kołodziejczak, Izabela Bednarska-Wnuk, and Ilona Świątek-Barylska, 51–69. Management. Poland: Lodz University Press, 2020. Accessed January 25, 2026. https://www.press.uni.lodz.pl/index.php/wul/catalog/book/1353/chapter/4177.