RADVILAVIČIUS, V. On Studying the Ground of Scientific Work. Problemos, [S. l.], v. 10, p. 133–135, 1972. DOI: 10.15388/Problemos.1972.10.5499. Disponível em: https://www.zurnalai.vu.lt/problemos/article/view/5499. Acesso em: 27 nov. 2025.