Optimization and coordination of supply chain under trade credit contract 并列题名：Optimization and coordination of supply chain under trade credit contract Optimization and coordination of dual-channel supply chain Optimization and coordination of dual-channel supply chain. Quantity discount contract coordination supply chain under price random condition 并列题名：Optimization and coordination of dual-channel supply chain Research on the coordination mechanism of supply chain under uncertain conditions 并列题名：Research on the coordination mechanism of supply chain under uncertain conditions Collaboration and coordination of dual-channel supply chain Optimization models and algorithms for supply chain under disruptions