Calculation of scale elasticities in DEA models: direct and indirect approaches.Published in:Journal of Productivity Analysis, 2007, v. 28, n. 1/2, p. 45, doi. 10.1007/s11123-007-0047-5By:Førsund, Finn R.;Hjalmarsson, Lennart;Krivonozhko, Vladimir E.;Utkin, Oleg B.Publication type:Article