 Since 1977 he has been a professor in sociology and methodology at the Universidad Autónoma Metropolitana in Mexico, D.F..Since then he has shown a lot of interest in politics and social movements in Latin America, and documented a great deal of their activity.He is considered one of the most important figures in the "New School of Bremen" in sociology, constituted by Arno Peters, Carsten Stahmer, and the Cuban physicist Raimundo Franco.