Y. AL-BAYATI, A.; E. KHALID, H. On Multi-Objective Geometric Programming Problems with a Negative Degree of Difficulty. IRAQI JOURNAL OF STATISTICAL SCIENCES, [S. l.], v. 12, n. 1, p. 1–14, 2012. DOI: 10.33899/iqjoss.2012.060259. Disponível em: https://tanmiyat.uomosul.edu.iq/index.php/stats/article/view/29197. Acesso em: 6 sep. 2025.