On the solutions of fractional order of evolution equations V. F. Morales-Delgado, M. A. Taneco-Hernández and J. F. Gómez-Aguilar Eur. Phys. J. Plus, 132 1 (2017) 47 Published online: 26 January 2017 DOI: 10.1140/epjp/i2017-11341-0