Adhikari, Purnima, and Gyan Bahadur Thapa. “A Note on Feasibility and Optimality of Transportation Problem”. Journal of the Institute of Engineering 10, no. 1 (July 31, 2014): 59–68. Accessed April 24, 2024. https://www.nepjol.info/index.php/JIE/article/view/10879.