Cooper W.W. Introduction to data envelopment analysis and its uses : with DEA-solver software and references / W. W. Cooper, L. M. Seiford, K. Tone, 2006 r=on-line. - Текст : электронный.
Cooper W.W. Data envelopment analysis : a comprehensive text with models, applications, references and DEA-Solver software / W. W. Cooper, L. M. Seiford, K. Tone, 2007 r=on-line. - Текст : электронный.