Joshi, Bhuwan Chandra, Rakesh Mohan, and Pankaj. “Generalized Invexity and Mathematical Programs”. Yugoslav Journal of Operations Research 31, no. 4 (November 1, 2021): 455–469. Accessed June 2, 2026. https://yujor.fon.bg.ac.rs/index.php/yujor/article/view/677.