Nguyen, H.-H. ., Hoang, N.-T., & Nguyen, V.-T. (2022). Necessary optimality conditions for approximate Pareto efficient solutions of nonsmooth fractional interval-valued multiobjective optimization problems . HPU2 Journal of Science: Natural Sciences and Technology, 1(2), 81–90. https://doi.org/10.56764/hpu2.jos.2022.2.1.81-90