SKERSYTĖ, Jūratė. Gnoseological Interpretation of the Logical Deduction Theory. Problemos, [S. l.], v. 4, p. 18–28, 1969. DOI: 10.15388/Problemos.1969.4.5757. Disponível em: https://test.zurnalai.vu.lt/problemos/article/view/5757. Acesso em: 26 oct. 2025.