Krivonozhko, Vladimir E.; Førsund, Finn R.; Lychev, … - In: European Journal of Operational Research 220 (2012) 3, pp. 716-721
A new DEA model has been introduced recently combining the primal and the dual models in order to impose strong complementary slackness conditions. It was claimed that a reference set that contains the maximum number of efficient units can then be determined. The model is very interesting as a...