... fractional differential equations with con-vergence analysis. Comput. Math. Appl. 61, 30–43 (2011)23. Vanani, SK, Aminataei, A: Tau approximate solution of fractional partialdifferential equations. ... periodicsolutions of a class of semilinear fractional differential equations. NonlinearAnal. Real World Appl. 11, 3532–3554 (2010)2. Agarwal, RP, Lakshmikantham, V, Nieto, JJ: On the concept of solutionfor ... fractional differential equations with uncertainty. Nonlinear Anal. 72,2859–2862 (2010)3. Garrappa, R, Popolizio, M: On the use of matrix functions for fractionalpartial differential equations....