Positive solutions for system of nonlinear fractional differential equations in two dimensions with delay. Babakhani, Azizollah — 2010 Abstract and Applied Analysis
Employing of some basic theory for class of fractional differential equations. Babakhani, Azizollah; Baleanu, Dumitru — 2011 Advances in Difference Equations [electronic only]
Existence of positive solutions for multi-term non-autonomous fractional differential equations with polynomial coefficients. Babakhani, Azizollah; Daftardar-Gejji, Varsha — 2006 Electronic Journal of Differential Equations (EJDE) [electronic only]