ATOYEV , A. . HISTORICAL STAGES OF THE EMERGENCE OF OPERATIONAL-SEARCH ACTIVITY. International Bulletin of Engineering and Technology, [S. l.], v. 5, n. 4, p. 156–162, 2025. Disponível em: https://www.internationalbulletins.com/intjour/index.php/ibet/article/view/1920. Acesso em: 3 mar. 2026.