PLEČKAITIS, Romanas. The 400th Anniversary of the Teaching of Philosophy in Lithuanian Schools. Problemos, [S. l.], v. 8, p. 7–11, 1971. DOI: 10.15388/Problemos.1971.8.5823. Disponível em: https://www.zurnalai.vu.lt/problemos/article/view/5823. Acesso em: 6 nov. 2025.