6Noel D U. Technical efficiency, allocative efficiency, and the impact of incentive regulation in telecommunications in the United States. Structural Change and Economic Dynamics, 2001 (12):59-73 被引量:1
7Pentzaropoulos G C, Giokas D I. Comparing the operational efficiency of the main European telecommunications organizations: a quantitative analysis. Telecommunications Policy, 2002(26):595-606 被引量:1
8HsiangChih Tsai, ChunMei Chen, GwoHshiung Tzeng. The comparative productivity efficiency for global telecoms. International Journal of Production Economics, 2006(103):509-526 被引量:1