“…The most recent studies include Camanho and Dyson (1999), Zenios (1999a, 1999b), Golany and Storbeck (1999), Kantor and Maital (1999), Soteriou et al (1999), Zenios et al (1999), Athanassopoulos and Giokas (2000), Athanassopoulos, Soteriou, and Zenios (2000), Cook, Hababou, and Tuentner (2000), Dekker and Post (2001), Hartman, Storbeck, and Byrnes (2001), Bala andCook (2003), Silva Portela et al (2003), and Paradi and Schaffnit (2004). A handful of studies have used FDH for the same purpose, including Respaut (1989), Tulkens (1993), and Tulkens and Malnero (1996). 3 An excellent illustration of the use of alternative empirical methodologies for cross-validation purposes is provided by Charnes, Cooper, and Sueyoshi (1988), who used DEA and goal programming to provide complementary analyses of the breakup of AT&T in the US.…”