Bootstrapping long memory tests: Some Monte Carlo results. - Anthony Murphy; Marwan Izzeldin (Comput. Stat. Data Anal., 2009)

A novel model of costly technical efficiency. - Mike G. Tsionas; Marwan Izzeldin (Eur. J. Oper. Res., 2018)

Smooth approximations to monotone concave functions in production analysis: An alternative to nonparametric concave least squares. - Mike G. Tsionas; Marwan Izzeldin (Eur. J. Oper. Res., 2018)