Modelling of Production-Inventory Problems in a Two-Echelon Closed-Loop Supply Chain http://127.0.0.1/xmlui/handle/123456789/6478 Fri, 17 Apr 2026 03:10:47 GMT 2026-04-17T03:10:47Z Modelling of Production-Inventory Problems in a Two-Echelon Closed-Loop Supply Chain http://127.0.0.1/xmlui/handle/123456789/6479 Modelling of Production-Inventory Problems in a Two-Echelon Closed-Loop Supply Chain Mawandiya, Bimal Kumar Fri, 01 Apr 2016 00:00:00 GMT http://127.0.0.1/xmlui/handle/123456789/6479 2016-04-01T00:00:00Z