... Systems,Cambridge Academic, Cambridge, UK, 2009.7 V. Lakshmikantham and A. S. Vatsala, “Basic theory of fractional differential equations,” NonlinearAnalysis. Theory, Methods & Applications, ... 56–64, 2005.9 V. Daftardar-Gejji and S. Bhalekar, “Boundary value problems for multi-term fractional differentialequations,” Journal of Mathematical Analysis and Applications, vol. 345, no. ... 2677–2682, 2008.8 V. Daftardar-Gejji, “Positive solutions of a system of non-autonomous fractional differentialequations,” Journal of Mathematical Analysis and Applications, vol. 302, no. 1,...