Rafael Martínez-Guerra earned his Ph.D. degree from Metropolitan Autonomous University (UAM) in 1996. Currently, he is a researcher at the Automatic Control Department of the Center for Research and Advanced Studies (CINVESTAV – IPN) and member of the National System of Researchers (SNI) since 1992. He is author and co-author of more than 80 papers in international journals and more than 130 contributions in international conference and proceedings. He is co-author of 7 books. His research interests are in the areas of nonlinear systems, differential geometric and differential algebraic methods, fractional nonlinear observers, fractional fault detection and diagnosis, secure communications, fractional synchronization and chaos. Fidel Meléndez-Vázquez obtained the M.Eng. degree at the National Polytechnic Institute (IPN) and the Ph.D. degree in Science at the Center for Research and Advanced Studies (CINVESTAV – IPN), in Mexico City, where his research focused on fault diagnosis and rejection in integer and fractional-order systems. Currently, he is a Postdoctoral Assistant Researcher at the Universidad Iberoamericana in Mexico City, where he works on the theory and applications of fractional calculus. He has recently obtained the Appointment as Candidate in the National System of Researchers (SNI), awarded by the National Council of Science and Technology (CONACYT) from Mexico. Iván Trejo-Zúñiga is Fulltime Professor in mechatronics at the Technological University of San Juan del Rio, Querétaro, Mexico. He obtained his Ph.D. in Automatic Control from the Center for Research and Advanced Studies (CINVESTAV – IPN). He is a member of the National System of Researchers (SNI) and conducts research on topics such as fault diagnosis, fault-tolerant control for integer and fractional-order systems, robust control, fractional differentiators and observers fordynamical systems.