VALEVIČIUS, V. Logic, Methodology of Science, and Theory of Knowledge. Problemos, [S. l.], v. 22, p. 19–20, 1978. DOI: 10.15388/Problemos.1978.22.6225. Disponível em: https://www.journals.vu.lt/problemos/article/view/6225.. Acesso em: 1 may. 2024.