Jalal Mitlif R. Solving fuzzy fractional linear programming problems by ranking function methods. Mustansiriyah.J.Sci.Edu [انترنت]. 13 أغسطس، 2020 [وثق 4 مايو، 2024];17(1):93-108. موجود في: https://edumag.uomustansiriyah.edu.iq/index.php/mjse/article/view/594