Browsing by Author "6e244cce-635e-4a60-876b-9377234b7a64"
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Disentangling the European airlines efficiency puzzle: A network data envelopment analysis approach
Duygun, Meryem; Prior, Diego; Shaban, Mohamed; Tortosa-Ausina, Emili Elsevier (2016)In recent years the European airline industry has undergone critical restructuring. It has evolved from a highly regulated market predominantly operated by national airlines to a dynamic, liberalized industry where airline ... -
Quo Vadis, Raters? A frontier approach to identify overratings and underratings in sovereign credit risk
Oztürk, Hüseyin; Tortosa-Ausina, Emili; Duygun, Meryem; Shaban, Mohamed Taylor & Francis (2020-04-03)This study analyses overratings and underratings in sovereign credit risk. The analysis uses partial frontier methods, a technique rarely applied in this literature. By combining a robust variant of the free disposal hull ... -
Rethinking banking and finance: Money, markets and models
Duygun, Meryem; Shaban, Mohamed; Soriano, Pilar; Tortosa-Ausina, Emili Elsevier (2013-12)The papers included in this special issue have been selected from the papers presented at the 2012 International Finance and Banking Society (IFABS) conference that was held in Valencia on 18–20 June, 2012, in collaboration ...