Sana, Sankar Shib, and Kripasindhu Chaudhuri. “On a Volume Flexible Production Policy in a Family Production Context”. Yugoslav Journal of Operations Research 16, no. 1 (March 1, 2006): 85–96. Accessed August 25, 2025. https://yujor.erc.fon.bg.ac.rs/index.php/yujor/article/view/181.