Bogetoft, P. Benchmarking with DEA, SFA, and R [Electronic resource] / P. Bogetoft, L. Otto. - Electronic text data. - New York, NY : Springer Science+Business Media LLC, 2011. - (International series in operations research & management science, ISSN 0884-8289 ; 157). - ISBN 978-1-4419-7961-2 : Б. ц.