dea.add.env             Additive model in envelopment form
dea.add.mul             Additive model in multiplier form
dea.bcc.io.env          BCC input oriented model in envelopment form
dea.bcc.io.mul          BCC input oriented model in multiplier form
dea.bcc.oo.env          BCC output oriented model in envelopment form
dea.bcc.oo.mul          BCC output oriented model in multiplier form
dea.ccr.io.env          CCR input oriented model in envelopment form
dea.ccr.io.mul          CCR input oriented model in multiplier form
dea.ccr.oo.env          CCR output oriented model in envelopment form
dea.ccr.oo.mul          CCR output oriented model in multiplier form
dea.sbm.bcc             BCC slack-based measure of efficiency
dea.sbm.bcc.io          BCC input oriented slack-based measure of
                        efficiency
dea.sbm.bcc.oo          BCC output oriented slack-based measure of
                        efficiency
dea.sbm.ccr             CCR slack-based measure of efficiency
dea.sbm.ccr.io          CCR input oriented slack-based measure of
                        efficiency
dea.sbm.ccr.oo          CCR output oriented slack-based measure of
                        efficiency
