Positive solutions to an n th order right focal boundary value problem. Maroun, Mariette — 2007 Electronic Journal of Qualitative Theory of Differential Equations [electronic only]
Periodicity and stability in neutral nonlinear differential equations with functional delay. Dib, Youssef M.; Maroun, Mariette R.; Raffoul, Youssef N. — 2005 Electronic Journal of Differential Equations (EJDE) [electronic only]