1. Neuro-Fuzzy and Soft Computing, A Computational Approach to Learning and Machine Intelligence;Jang,1997
2. Tutorial Type-2 fuzzy logic: theory and applications, Juan Ramón Castro Rodríguez, Universidad Autónoma de Baja California, Instituto Tecnològico de Tijuana, October 9, 2006. .
3. Genetic Algorithms, Concepts and Designs;Man,1999
4. February, 2007.
5. Tecnologías Biométricas Aplicadas a la Seguridad, Juan A. Sigüenza, Merino Tapiador Mateos (Ra-ma), March 2007. .