SABIROVNA, Tashmatova Shaxnoza; ERKINIVNA, Kurbanova Kabira. Operatsion Tizimlarning Turlari, Operatsion Tizim Tushunchasi. Miasto Przyszłości, [S. l.], v. 49, p. 1297–1301, 2024. Disponível em: https://miastoprzyszlosci.com.pl/index.php/mp/article/view/4131. Acesso em: 6 aug. 2025.