RAY, A., B. SARKAR, and S. K. SANYAL. “AN EXPLORATORY ANALYSIS OF OPTIMIZING PRODUCT MIX THROUGH HEURISTIC: AN ECLECTIC DECISION”. International Journal of Industrial Engineering: Theory, Applications and Practice, vol. 18, no. 9, Dec. 2011, doi:10.23055/ijietap.2011.18.9.92.