03/2003: International Summer School in Metaheuristics, Metaheuristics Network, Tenerife, Spain.
02/2003: 5th European "Agent Systems Spring School," Barcelona, Spain, with grant from AgentLink.
10/1999 - 03/2000: German language courses (DAAD-sponsored, German Academic Exchange Service), Goethe-Institut, Göttingen, Germany.
03/1999: Summer School in Computer Science "Multimedia data bases for communication networks," Polytechnical University Cataluña and Havana University, Havana, Cuba.
01/1999: UNESCO Summer School in Computer Science "Computer Theory and Applications," Havana University, Havana, Cuba.
06/1996: 2nd Iberoamerican Summer School in Computer Science, Iberoamerican Net of Software Technology (RITOS), Santa Cruz, Bolivia, with fellowship from the Spanish Agency of International Cooperation (AECI), Spain.