Mustafa, Rebaz, and Nejmaddin A. Sulaiman. 2021. “A New Mean Deviation and Advanced Mean Deviation Techniques to Solve Multi-Objective Fractional Programming Problem Via Point-Slopes Formula”. Pakistan Journal of Statistics and Operation Research 17 (4), 1051-64. https://doi.org/10.18187/pjsor.v17i4.3789.