TY  - RPRT
TI  - A modified three-stage data envelopment analysis. The Netherlands.
AU  - Jos L T Blank
AU  - Vivian Valdmanis
PY  - 2005
DO  - 10.1007/s10198-004-0260-3
UR  - https://pubmed.ncbi.nlm.nih.gov/15714339/
ID  - 15714339
ER  -