DARGINAVIČIENĖ, Aldona; BALČIUS, J.; AŽUBALIS, J. New Theses. Problemos, [S. l.], v. 13, p. 134–137, 1974. DOI: 10.15388/Problemos.1974.13.5548. Disponível em: https://www.zurnalai.vu.lt/problemos/article/view/5548.. Acesso em: 7 may. 2024.