International Journal of Supply and Operations Management 2 1 2015 05 01 Integrated Inventory Model with Controllable Lead Time Involving Investment for Quality Improvement in Supply Chain System617 639 en M Vijayashree The Gandhigram Rural Institute Deemed- University, Gandhigram, Dindigul, India R Uthayakumar The Gandhigram Rural Institute Deemed- University, Gandhigram, Dindigul, India 2015 06 22 Integrated inventory model Vendor buyer coordination Controllable lead time crashing cost Supply Chain Management Investment for quality improvements http://www.ijsom.com/pdf_2378_41a92a7bbfc71306b693c948da808146.html