GENDROLIS, Edmundas. On the Logicality of Primitive Thinking. Problemos, [S. l.], v. 16, p. 61–68, 1975. DOI: 10.15388/Problemos.1975.16.5594. Disponível em: https://test.zurnalai.vu.lt/problemos/article/view/5594. Acesso em: 24 oct. 2025.