TY  - BOOK
A2  - Subhash C. Ray.
AU  - Ray, Subhash C.
ET  - 1st paperback ed.
NV  - XII, 353 s. :
PY  - 2011
SN  - 9780521802567
SN  - 9781107405264
SN  - 0521802563
TI  - Data envelopment analysis : theory and techniques for economics and operations research /
ER  -