@book{32442,
	author = {Coelli, Timothy J. and Prasada Rao, D.S. and SpringerLink (Online service)},
	title = {An Introduction to Efficiency and Productivity Analysis},
	publisher = {Springer US,},
	year = {2005.},
	address = {Boston, MA :},
	edition = {Second Edition.},
	url = {http://dx.doi.org/10.1007/b136381}
}