VALEVIČIUS, V. From the History of Logic. Problemos, [S. l.], v. 26, p. 122–122, 1981. DOI: 10.15388/Problemos.1981.26.6301. Disponível em: https://journals.vu.lt./problemos/article/view/6301. Acesso em: 26 apr. 2025.