On the relation between interior critical points of positive solutions and parameters for a class of nonlinear boundary value problems. Afrouzi, G.A.; Moghaddam, M.Khaleghy — 2002 International Journal of Mathematics and Mathematical Sciences
On the positive and negative solutions of Laplacian BVP with Neumann boundary conditions. Afrouzi, G.A.; Moghaddam, M.Khaleghy; Mohammadpour, J.; Zameni, M. — 2009 The Journal of Nonlinear Sciences and its Applications