KALENDA, Česlovas. K. Marx’s Teaching – Basis for Our Investigations (Review of the Republican Scientific Conference of Philosophers). Problemos, [S. l.], v. 2, p. 7–15, 1968. DOI: 10.15388/Problemos.1968.2.5719. Disponível em: https://www.zurnalai.vu.lt/problemos/article/view/5719. Acesso em: 6 nov. 2025.