Optimization and coordination of dual-channel supply chain Optimization and coordination of dual-channel supply chain. 并列题名：Optimization and coordination of dual-channel supply chain Collaboration and coordination of dual-channel supply chain 并列题名：Collaboration and coordination of dual-channel supply chain Optimization and coordination of supply chain under trade credit contract Research on decisions and coordination with contracts in dual-channel supply chain 并列题名：Optimization and coordination of supply chain under trade credit contract Research on decision making in dual-channel supply chain Research on operation strategies of dual-channel supply chain