SIZONOVAS, Anatolijus. Moral Stimuli in Developed Socialist Society. Problemos, [S. l.], v. 26, p. 12–17, 1981. DOI: 10.15388/Problemos.1981.26.6287. Disponível em: https://test.zurnalai.vu.lt/problemos/article/view/6287. Acesso em: 27 oct. 2025.