Technical and allocative efficiency in European banking. - Sophocles N. Brissimis; Manthos D. Delis; Efthymios G. Tsionas (Eur. J. Oper. Res., 2010)

Bank-level estimates of market power. - Sophocles N. Brissimis; Manthos D. Delis (Eur. J. Oper. Res., 2011)

Developing a step-by-step effectiveness assessment model for customer-oriented service organizations. - Sophocles N. Brissimis; Panagiotis D. Zervopoulos (Eur. J. Oper. Res., 2012)