On subordination of Convolution Semigroups. - Sonia Ben Othman; Slim Bouaziz; Mohamed Hmissi (Int. J. Bifurc. Chaos, 2003)

On the Existence of Positive Solutions of a Nonlinear Differential Equation. - Sonia Ben Othman; Habib Mâagli; Noureddine Zeddini (Int. J. Math. Math. Sci., 2007)