ŠLIOGERIS, Arvydas. F. Engels’ Ideological Heritage and the Present (Review of the Interinstitute Scientific Conference). Problemos, [S. l.], v. 7, p. 5–13, 1971. DOI: 10.15388/Problemos.1971.7.5805. Disponível em: https://www.zurnalai.vu.lt/problemos/article/view/5805. Acesso em: 7 nov. 2025.