R. Gorenflo (1930-2017) received his doctorate from the Technical University of Karlsruhe in 1960 for his work on complex functions. Then from 1974, after several engagements as an applied mathematician in a number of scientific and industrial Institutions, since 1974 he served as a Professor at the Free University Berlin, where he retired in 1998, remaining an active researcher. Since the 1960s he was actively interested in fractional integral equations and diffusion problems, leading him to a close collaboration with F. Mainardi and other researchers, focusing on fractional differential equations and related special functions, with a particular emphasis on modeling physical processes.

A.A. Kilbas (1948-2010) graduated from the Belarusian State University in Minsk in 1971, where he received his PhD and Doctor of Sciences degrees and where he workeding continuously at this university for almost 40 years. Professor A.A. Kilbas was a world-reknowned scientist whose contributions to the theory of integral equations, fractional integro-differentiation, fractional differential equations, integral transforms and special functions are highly regarded by the mathematical community. Many of his results were obtained in collaboration with scientists fromof all over the world. He was the author of more than 300 research articles and 6 monographs, includingn particular, one of the most important monographs in Fractional Calculus, "Fractional Integral and Derivatives: Theory and Applications" (joint with S.G. Samko and O.I. Marichev).

F. Mainardi graduated with a degree in Theoretical Physics from the University of Bologna in 1966, where he also took an advanced degree and continueds to serve as a Professor of Mathematical Physics for more than 40 years at the University of Bologna. He is the author of three books, has been athe co-organizers of several international conferences and is the editor of various books of selected papers. His main research interests are devoted to problems of Applied Mathematics, Continuum Mechanics, Wave Motion, Fractional Calculus and Stochastic Processes, on which he has beenis actively working also since his retirement from the University of Bologna in 2015.

S.V. Rogosin graduated from the Belarusian State University in Minsk in 1974, where he later received his PhD. His research interests concern boundary value problems, complex analysis, integral equations and fractional calculus and their applications in continuous media mechanics. He is the author of three books, has been the co-organizer of several international conferences and is the editor of various books of selected papers.

Preface.- Introduction.- Overview on the Mittag-Leffler funtion.- Classical Mittag-Laffler function.- Two-parametric Mittag-Leffler functions with three parameters.- Multi-index and multi-variable Mittag-Leffler functions. - The Classical Wright function. - Applications to solution of fractional order equations. - Applications to deterministic models.- Applications to stochastic models. - Appendix A. The Eulerian functions.- Appendix B. Basic of Entire Functions.- Appendix C. Integral transforms.- Appendix D. Mellin-Barnes integral. - Appendix E. Elements of Fractional Calculus.- Appendix F. Higher transcendental functions.- References.- Index.