Harnack inequality for nonlinear weighted equations. Rhouma, Nedra Belhaj; Mosbah, Mahel — 2010 Analele Ştiinţifice ale Universităţii “Ovidius" Constanţa. Seria: Matematică
Perturbations and nonlinear harmonic spaces. (Perturbations et espaces harmoniques non linéares.) Bel Hadj Rhouma, Nadra; Boukricha, Abderrahman; Mosbah, Mahel — 1998 Annales Academiae Scientiarum Fennicae. Mathematica