%0 Journal Article %T Efficiency evaluation in data envelopment analysis using strong defining hyperplanes %A Dellnitz, Andreas %A Reucher, Elmar %A Kleine, Andreas %J OR Spectrum %V 43 %N 2 %P 441-465 %@ 0171-6468 %D 2021-03-07 %I Springer Berlin Heidelberg %~ DeepDyve