1. Ahmed Omer Mohammed Abubaker; The Existence of Positive Solutions of Semi-Ppsitone 3×3 Systems, International Journal of Research and Reviews in Applied Sciences,12, 1 ( 2012)

2. Ruyun Ma, Yanqiong Lu and Ahmed Omer Mohammed Abubaker; On positive solutions to equations involving the one-dimensional p-Laplacian, Boundary Value Problems 2013, 2013:125

3. Ruyun Ma, Chunjie Xie Ahmed Omer Mohammed Abubaker; Positive Solutions of the One-Dimensional P-Laplacian with Nonlinearity Defined on a Finite Interval, Abstract and Applied Analysis, Volume 2013 (2013), Article ID 492026, 6 pages

, http://www.hindawi.com/72382586/

4. Ahmed Omer Mohammed Abubaker; One-dimensional p-Laplacian equations for a class

of non-positone problems; International Journal of Mathematical Science; (Accepted ).

5. Ahmed Omer Mohammed Abubaker; Positive solutions for one-dimensional p-Laplacian boundary value problems with nonlinear parameter; International Journal of Applied Mathematical Research; (Accepted ).