АБРАМОВИЧ, А. . М. . . ТЕОРИЯ ПОТРЕБНОСТЕЙ И ПРОБЛЕМ. Bulletin of the South-Russian state technical University (NPI) Series Socio-economic Sciences, [S. l.], n. 4, p. 42–58, 2012. Disponível em: https://vestnik.npi-tu.ru/index.php/vestnikSRSTU/article/view/364. Acesso em: 2 май. 2024.