A set covering model for optimizing selection of contract bidding in a strategic sourcing process: a case study of the Nigerian Airforce. JOURNAL OF BASICS AND APPLIED SCIENCES RESEARCH, [S. l.], v. 3, n. 3, p. 78–91, 2025. DOI: 10.4314/jobasr.v3i3.10. Disponível em: https://jobasrfudutsinma.com/index.php/ojs-files/article/view/210. Acesso em: 30 mar. 2026.