Ngọc, Phạm Lê, Nguyen Tung, and Nguyen Nghia. 2020. “The Second-Order Composed Radial Derivatives of Perturbation Mappings of Parametric Set-Valued Optimization Problems”. Science & Technology Development Journal: Natural Sciences 4 (3), 567-72. https://doi.org/https://doi.org/10.32508/stdjns.v4i3.838.