On the single item multi-supplier system with variable lead-time, price-quantity discount, and resource constraints. - Ching-Ter Chang; Chen-Lung Chin; Mei-Feng Lin (Appl. Math. Comput., 2006)

Does Innovation Matter to Conference Calls? - Chen-Lung Chin; Picheng Lee; Ping-Wen Wang; Gary Kleinman (IEEE Trans. Engineering Management, 2007)