Selection of the Ridge Parameter Using Mathematical Programming. - Ramadan Hamed; Ali El Hefnawy; Aya Farag (Commun. Stat. Simul. Comput., 2013)

A Combined Nonlinear Programming Model and Kibria Method for Choosing Ridge Parameter Regression. - Ali El Hefnawy; Aya Farag (Commun. Stat. Simul. Comput., 2014)

A Goal Programming Approach to Multichoice Multiobjective Stochastic Transportation Problems with Extreme Value Distribution. - Hadeel Al Qahtani; Ali El Hefnawy; Maha M. El-Ashram; Aisha Fayomi (Adv. Oper. Res., 2019)

Mixed integer nonlinear goal programming approach to variable selection in linear regression. - Mohammed Albassam; Ali El Hefnawy; Emad E. A. Soliman (Commun. Stat. Simul. Comput., 2021)