AŽUBALIS, J. The Conference of Young Scientists. Problemos, [S. l.], v. 1, p. 135–136, 1968. DOI: 10.15388/Problemos.1968.1.5717. Disponível em: https://test.zurnalai.vu.lt/problemos/article/view/5717. Acesso em: 25 oct. 2025.