Numerical methods for multi-term fractional (arbitrary) orders differential equations. - A. E. M. El-Mesiry; A. M. A. El-Sayed; H. A. A. El-Saka (Appl. Math. Comput., 2005)

On the fractional-order logistic equation. - A. M. A. El-Sayed; A. E. M. El-Mesiry; H. A. A. El-Saka (Appl. Math. Lett., 2007)