International Journal of Supply and Operations Management 2 4 2016 02 01 Inventory Model for Deteriorating Items with Quadratic Time Dependent Demand under Trade Credits1064 1078 en Rakesh Tripathi Graphic Era University, Dehradun (UK) India Dinesh Singh Head Department of Mathematics SSRRPG College, Dehradun (UK) India Tushita Mishra Department of Mathematics SGRRPG College Dehradun (UK) India 2014 11 07 Quadratic time Dependent demand Inventory Trade credits Deterioration Time dependent http://www.ijsom.com/pdf_2620_933a1134d5dbd8a4bd015bf361dfe9c4.html