N. K. Sahoo, and P. K. Tripathy. “An EOQ Model for Quadratic Demand Rate, Parabolic Deterioration, Time Dependent Holding Cost With Partial Backlogging”. International Journal of Mathematics And Its Applications, vol. 6, no. 1 - B, Jan. 2018, pp. 325-32, http://ijmaa.in/index.php/ijmaa/article/view/928.