LEONTIEV, Dmitry and OSIN, Evgeny. Utrata sensu życia i wyobcowanie [Estrangement and Loss of Meaning]. Studies in the History of Philosophy. Online. 29 December 2017. Vol. 8, no. 4, pp. 35-56. [Accessed 22 July 2024]. DOI 10.12775/szhf.2017.040.