PLEČKAITIS, Romanas. I. H. Abicht at Vilnius University. Problemos, [S. l.], v. 22, p. 87–88, 1978. DOI: 10.15388/Problemos.1978.22.6234. Disponível em: https://www.zurnalai.vu.lt/problemos/article/view/6234. Acesso em: 7 nov. 2025.