КОВАЛЕВ, А. И.; ЗЕНКИН, А. С. Indicators of enterprise activity quality. Problems of Informatization and Control, [S. l.], v. 4, n. 48, p. 60–67, 2014. DOI: 10.18372/2073-4751.4.7991. Disponível em: http://jrnl.kai.edu.ua/index.php/PIU/article/view/7991. Acesso em: 14 jun. 2026.