additive.R	Solve Additive Model
ar.dual.dea.R	Solve Assurance Region (AR) DEA Model
cost.dea.R	Solve Cost Minimization Problem 
ddf.R		Solve Direction Distance Function
dea.R		Solve DEA
direc.dea.R	Solve Direction Distance Function with Undesirable Outputs
dual.dea.R	Solve Dual DEA
faremalm2.R	Solve Malmquist Productivity Growth Index
fdh.R		Solve Free Disposable Hull (FDH) Model
int.dea.R	Solve DEA with Integer-valued Inputs/Outputs
lp2.R		Solve LP with free variables
orderm.R	Solve order-m
revenue.dea.R	Solve Revenue Maximization Problem
sbm.tone.R	Solve Slacks-based Model under CRS assumption
sbm.vrs.R	Solve Slacks-based Model under VRS assumption