VALEVIČIUS, V. City and Man. Problemos, [S. l.], v. 45, p. 125–126, 1991. DOI: 10.15388/Problemos.1991.45.7073. Disponível em: https://test.zurnalai.vu.lt/problemos/article/view/7073. Acesso em: 25 oct. 2025.