Dr. Gerardo Espinosa-Pérez is currently a Full Professor at the National Autonomous University of Mexico. He received an M.Sc. degree in electrical engineering at the Center for Research and Advanced Studies, Guadalajara, Mexico, in 1989 and a Ph.D. degree at the Faculty of Engineering of the National Autonomous University of Mexico in 1993. In 1986, he joined the Faculty of Higher Studies Cuautitlan of the National Autonomous University of Mexico and since 1989, he has been a professor at the Faculty of Engineering of the same university, where he has taught different subjects related to Automatic Control and Mathematics. Moreover, he is now a National Level II Researcher in the National System of Researchers. His research topics mainly include the control of nonlinear systems with physical structure, especially Lagrangian and Hamiltonian systems.