Data envelopment analysis based comparison of two hybrid multi-criteria decision-making approaches for mobile phone selection: a case study in Iranian telecommunication environment. - Iraj Mahdavi; Hamed Fazlollahtabar; Ellieh Mozaffari; Morvarid Heidari; Nezam Mahdavi-Amiri (Int. J. Inf. Decis. Sci., 2008)