MORKŪNAS, Zigmantas. Economics and Politics. Problemos, [S. l.], v. 11, p. 117–118, 1973. DOI: 10.15388/Problemos.1973.11.5515. Disponível em: https://test.zurnalai.vu.lt/problemos/article/view/5515. Acesso em: 24 oct. 2025.