LOBANOV, S.D. On usefulness, uselessness, attractiveness and harm. Perm Federal Research Centre Journal, [S. l.], n. 2, p. 98–110, 2020. DOI: 10.7242/2658-705X/2020.2.10. Disponível em: https://journal.permsc.ru/index.php/pscj/article/view/PSCJ2020n2p10. Acesso em: 14 may. 2026.