AUKŠTUOLYTĖ, Nijolė. The Mathematization of Cognitive Content and the Idea of Universal Language. Problemos, [S. l.], v. 52, p. 68–73, 1998. DOI: 10.15388/Problemos.1998.52.6936. Disponível em: https://test.zurnalai.vu.lt/problemos/article/view/6936. Acesso em: 25 oct. 2025.