Singh, Yadvendra, S.K. Mishra, and K.K. Lai. “Optimality and Duality for Nonsmooth Semi-Infinite Multiobjective Programming With Support Functions”. Yugoslav Journal of Operations Research 27, no. 2 (May 1, 2017): 205–218. Accessed August 26, 2025. https://yujor.erc.fon.bg.ac.rs/index.php/yujor/article/view/499.