Lompo, Palamanga, and Abdoulaye COMPAORE. “An Introduction to Set-Valued Fractional Linear Programming Based on the Null Set Concept”. Statistics, Optimization & Information Computing 14, no. 5 (September 17, 2025): 2852-2873. Accessed December 5, 2025. http://www.iapress.org/index.php/soic/article/view/2794.