Gian Luigi Forti (1995)

Aequationes mathematicae

Gavruta, P., Jung, S.-M., Li, Y. (2010)

Annals of Functional Analysis (AFA) [electronic only]

Bouikhalene, Belaid, Elqorachi, Elhoucien, Redouani, Ahmed (2007)

JIPAM. Journal of Inequalities in Pure & Applied Mathematics [electronic only]

Redouani, Ahmed, Elqorachi, Elhoucien, Bouikhalene, Belaid (2006)

JIPAM. Journal of Inequalities in Pure & Applied Mathematics [electronic only]

Popa, Dorian (2005)

Advances in Difference Equations [electronic only]

Nakmahachalasint, Paisan (2007)

International Journal of Mathematics and Mathematical Sciences

Charifi, Ahmed, Bouikhalene, Belaid, Elqorachi, Elhoucien (2007)

Banach Journal of Mathematical Analysis [electronic only]

Moslehian, Mohammad Sal (2006)

International Journal of Mathematics and Mathematical Sciences

Park, Chun-Gil (2007)

Banach Journal of Mathematical Analysis [electronic only]

Miura, Takeshi, Takahasi, Sin-Ei, Hirasawa, Go (2005)

Journal of Inequalities and Applications [electronic only]

Kenary, H.Azadi, Shafaat, Kh., Shafei, M., Takbiri, G. (2011)

The Journal of Nonlinear Sciences and its Applications

Sibaha, Mohamed Ait, Bouikhalene, Belaid, Elqorachi, Elhoucien (2007)

JIPAM. Journal of Inequalities in Pure & Applied Mathematics [electronic only]

Maksa, Gyula, Páles, Zsolt (2001)

Acta Mathematica Academiae Paedagogicae Nyí regyháziensis. New Series [electronic only]

Paul-Georg Becker, Walter Bergweiler (1995)

Mathematische Annalen