Szukana fraza: [Abstract = "Interests in Closed\-Loop Supply Chain \(CLSC\) issues are growing day by day within the academia, companies, and customers. Many papers discuss profitability or cost reduction impacts of remanufacturing, but a very important point is almost missing. Indeed, there is no guarantee about the amounts of return products even if we know a lot about demands of first products. This uncertainty is due to reasons such as companies` capabilities in collecting End\-of\-Life \(EOL\) products, customers` interests in returning \(and current incentives\), and other independent collectors."]