MERČAITIS, Antanas. Concerning the Increase of Natural Population in the Lithuanian SSR. Problemos, [S. l.], v. 1, p. 90–96, 1968. DOI: 10.15388/Problemos.1968.1.5709. Disponível em: https://www.zurnalai.vu.lt/problemos/article/view/5709. Acesso em: 15 nov. 2025.