@article {RID:0330130807704-2,
	title = {An introduction to data envelopment analysis: A tool for performance measurement},
	journal = {JOURNAL OF THE OPERATIONAL RESEARCH SOCIETY},
	volume = {56},
	number = {6},
	year = {2005},
	pages = {751-752},
	author = {Cl{\'a}udia Sarrico}
}
