Rajesh Kumar Tiwari. “Multiple Objective Decision Making Criteria in Crop Production With the Help of Network Diagram (Pert and CPM)”. International Journal of Modern Agriculture 9, no. 4 (December 30, 2020): 689 - 693. Accessed May 5, 2024. http://www.modern-journals.com/index.php/ijma/article/view/410.