Thompson RG, PS Dharmapala, LJ Rothenberg and RM Thrall (1996). ?DEA/AR Efficiency and Profitability of 14 Major Oil Companies in U.S. Exploration and Production.” Computer and Operations Research 23(4): 357-373.
Thompson RG, PS Dharmapala, LJ Rothenberg and RM Thrall (1996). ?DEA/AR Efficiency and Profitability of 14 Major Oil Companies in U.S. Exploration and Production.” Computer and Operations Research 23(4): 357-373.