ŠLIOGERIS, Arvydas. New Theses. Problemos, [S. l.], v. 17, p. 116–117, 1976. DOI: 10.15388/Problemos.1976.17.5619. Disponível em: https://test.zurnalai.vu.lt/problemos/article/view/5619. Acesso em: 25 oct. 2025.