F?re R, S Grosskopf and C Pasurka (1989). “The Effect of Environmental Regulations on the Efficiency of Electric Utilities: 1969 Versus 1975.” Appl Econ 21: 225-235.
F?re R, S Grosskopf and C Pasurka (1989). “The Effect of Environmental Regulations on the Efficiency of Electric Utilities: 1969 Versus 1975.” Appl Econ 21: 225-235.