Stability of mixed additive-quadratic Jensen type functional equation in various spaces. - Hassan Azadi Kenary; Yeol Je Cho (Comput. Math. Appl., 2011)

Stabilities of Cubic Mappings in Various Normed Spaces: Direct and Fixed Point Methods. - Hassan Azadi Kenary; Hamid Rezaei; S. Talebzadeh; Sung Jin Lee (J. Appl. Math., 2012)