The following publications are possibly variants of this publication:
- A production-inventory model of imperfect quality products in a three-layer supply chainShib Sankar Sana. dss, 50(2):539-547, 2011. [doi]
- Three stage trade credit policy in a three-layer supply chain-a production-inventory modelBrojeswar Pal, Shib Sankar Sana, Kripasindhu Chaudhuri. ijsysc, 45(9):1844-1868, 2014. [doi]
- A three layer supply chain model with multiple suppliers, manufacturers and retailers for multiple itemsShib Sankar Sana, Jaime Acevedo Chedid, Katherinne Salas Navarro. amc, 229:139-150, 2014. [doi]