G.Misra, Srichandan Mishra, L.K.Raju, U.K.Misra*,. 2013. “OPTIMAL CONTROL OF AN INVENTORY SYSTEM WITH VARIABLE DEMAND & AMELIORATING / DETERIORATING ITEMS”. Asian Journal of Current Engineering and Maths 1 (3). http://innovativejournal.in/index.php/ajcem/article/view/81.