Ward PT, JE Storbeck, SL Mangum and PE Byrnes (1997). “An Analysis of Staffing Efficiency in US Manufacturing: 1983 and 1989.” Ann Oper Res 73: 67-89.

Warning S (2004). “Performance Differences in German Higher Education: Empirical Analysis of Strategic Groups.” Review of Industrial Organization 24(4): 393-408.

Watcharasriroj B and JCS Tang (2004). “The Effects of Size and Information Technology on Hospital Efficiency.” J High Technology Management Research 15(1): 1.

Watson GH (2000). “The Ethics of Analysis: How to Keep Your Numbers Honest.” Quality Progress 33(8): 18.

Wang X (1994). “Data Envelopment Analysis Approach on the Industrial Efficiency and Scales and its Application in Shandong.” J Systems Science and Systems Engineering 3(2): 140-147.

Wang X and C Peng (2000). “Integrated Software for Evaluating Advanced Manufacturing Technology Investment.? in Proceedings of the Seventh International Conference on Industrial Engineering and Engineering Management, Publishing House: 102-105.

Wang XH, XF Wang, AM Zhai and YJ Feng (2005). “A DEA Model Characterized by Increasing Marginal Revenue.” J Shanghai Jiaotong University 39(3): 484-487.

Wang X-H, X-F Wang, A-M Zhai and Y-J Feng (2004). “Method to Resolve DEA Model with Increasing Marginal Revenue.” J Harbin Institute of Technology 36(10): 1297-1300.

Wang Y and Y-J Feng (2004). “Cone-Ratio DEA Model Based on Group Decision.” J Harbin Institute of Technology 36(10): 1285-1287.

Wang Y, VM LeMay and PL Marshall (1996). “Relative Efficiency and Reliability of Parametric and Nonparametric Sequential Accuracy Testing Plans.” Canadian J Forest Research 26(10): 1724-1730.