On Cauchy-type functional equations. Elhoucien, Elqorachi; Akkouchi, Mohamed — 2004 International Journal of Mathematics and Mathematical Sciences
On Hyers-Ulam stability of Cauchy and Wilson equations. Elqorachi, Elhoucien; Akkouchi, Mohamed — 2004 Georgian Mathematical Journal
The superstability of the generalized d'Alembert functional equation. Elqorachi, Elhoucien; Akkouchi, Mohamed — 2003 Georgian Mathematical Journal
On Hyers-Ulam stability of a special case of O'Connor's and Gajda's functional equations. Bouikhalene, Belaid; Elqorachi, Elhoucien; Redouani, Ahmed — 2005 JIPAM. Journal of Inequalities in Pure & Applied Mathematics [electronic only]
Hyers--Ulam--Rassias stability of a generalized Pexider functional equation. Charifi, Ahmed; Bouikhalene, Belaid; Elqorachi, Elhoucien — 2007 Banach Journal of Mathematical Analysis [electronic only]
Hyers-Ulam stability of the generalized trigonometric formulas. Redouani, Ahmed; Elqorachi, Elhoucien; Bouikhalene, Belaid — 2006 JIPAM. Journal of Inequalities in Pure & Applied Mathematics [electronic only]
Hyers-Ulam stability of the generalized quadratic functional equation in amenable semigroup. Bouikhalene, Belaid; Elqorachi, Elhoucien; Redouani, Ahmed — 2007 JIPAM. Journal of Inequalities in Pure & Applied Mathematics [electronic only]
Hyers-Ulam-Rassias stability of the K -quadratic functional equation. Sibaha, Mohamed Ait; Bouikhalene, Belaid; Elqorachi, Elhoucien — 2007 JIPAM. Journal of Inequalities in Pure & Applied Mathematics [electronic only]