ALWADOOD, Z. .; AYUB, H. .; RAZALI, M. A. I. . A Modified Integer Programming Model for Cleaning Service Scheduling. Scientific Research Journal, [S. l.], v. 7, n. 1, p. 37–49, 2010. DOI: 10.24191/srj.v7i1.9423. Disponível em: https://journal.uitm.edu.my/ojs/index.php/SRJ/article/view/3182. Acesso em: 4 oct. 2024.