VALENTINAVIČIUS, Virginijus. What is Philosophy?. Problemos, [S. l.], v. 42, p. 116–121, 1990. DOI: 10.15388/Problemos.1990.42.7111. Disponível em: https://test.zurnalai.vu.lt/problemos/article/view/7111. Acesso em: 25 oct. 2025.