Verma, Prashant, and Subhash Datta. “Hierarchical Healthcare Facility Location at the Subdistrict Level in Western Uttar Pradesh: A Heuristic Approach”. Advances in Social Sciences Research Journal 8, no. 4 (April 13, 2021): 19–47. Accessed April 25, 2024. https://journals.scholarpublishing.org/index.php/ASSRJ/article/view/9799.