Tambunan, Hardi, and Herman Mawengkang. “Neighborhood Approach for Solving One Class of Mixed Integer Non-Linear Programming”. International Journal Of Mathematics And Computer Research 13, no. 1 (January 10, 2025): 4727-4730. Accessed January 21, 2025. https://ijmcr.in/index.php/ijmcr/article/view/860.