@article{oai:grips.repo.nii.ac.jp:00001378,
 author = {TONE, Kaoru},
 issue = {B-5},
 journal = {Institute for Policy Science research report. B},
 month = {Oct},
 note = {The purposes of this paper are (i) to present DEA (Data Envelopment Analysis) without using the non-Archimedian infinitesimal ε and (ii) to introduce a new measure of efficiency, which takes account of slacks in inputs and shortages in outputs and expresses the relative efficiency of decision making units more properly than the traditional one.},
 title = {An ε-Free DEA : A New Measure of Efficiency},
 volume = {92},
 year = {1992}
}