Wei QL and Z Xiao (1991). “Production Functions and the Compositive Data Envelopment Analysis Model.” J Systems Science and Mathematical Sciences 11.

Wei QL, H Yan and G Hao (2007). “Characteristics and Structures of Weak Efficient Surfaces of Production Possibility Sets.” J Mathematical Analysis and Applications 327(2): 1055-1074.

Wei Y-M, Y Fan, C Lu and H-T Tsai (2004). “The Assessment of Vulnerability to Natural Disasters in China by Using the DEA Method.” Environmental Impact Assessment Review 24(4): 427-439.

Wei M, H Zhenhua and L Wenbin (2006). “Efficiency Evaluation of Basic Research in China.” SCIENTOMETRICS 69(1): 85-101.

Wei Q and W-C Chiang (1996). “An Integral Method for the Measurement of Technological Progress and Data Envelopment Analysis.” J Systems Science and Systems Engineering 5(1): 75-86.

Wei Q and H Yan (2004). “Congestion and Returns to Scale in Data Envelopment Analysis.” EJOR 153(3): 641-660.

Wei Q and G Yu (1997). “Analyzing Properties of K-Cones in the Generalized Data Envelopment Analysis Model.” J Econometrics 80(1): 63-84.

Wei Q, G Yu and J Lu (2002). “The Necessary and Sufficient Conditions for Returns to Scale Properties in Generalized Data Envelopment Analysis Model.” Science in China, Series E 45(5): 503-517.

Wei Q, J Zhang and X Zhang (2000). “An Inverse DEA Model for Inputs/Outputs Estimate.” EJOR 121(1): 151-163.

Wei QL (1987). the DEA Method of Evaluating Relative Efficiency. Beijing, China, People Publisher.