“…For example, previous work includes Jitsuzumi and Nakamura (2003) and their measurement of the efficiencies of cable television network facilities in Japan; Sastry's (2009) evaluation of leaders and laggards in U.S. local telephone companies, Kang's (2009) examination of production efficiency in Taiwan's telecommunications industry, and the Menendez, Sanchez, Duarte and Sandulli (2009) exploration of the use of ICTs in several thousand Spanish firms to determine if it has any impact on firm performance and efficiency. In all instances, DEA proved to be a valuable approach for benchmarking performance.…”