BARZDAITIS, Juozas. Jonas Biliūnas’ Materialistic Views. Problemos, [S. l.], v. 22, p. 60–70, 1978. DOI: 10.15388/Problemos.1978.22.6231. Disponível em: https://www.journals.vu.lt/problemos/article/view/6231.. Acesso em: 23 jul. 2024.