Sigeru Omatu, Juan F. De Paz Santana, Sara Rodríguez-González, José M. Molina, Ana M. Bernardos, Juan M. Corchado Rodríguez: Distributed Computing and Artificial Intelligence - 9th International Conference, DCAI 2012, Salamanca, Spain, 28-30th March, 2012. Advances in Intelligent and Soft Computing 151, Springer 2012, ISBN 978-3-642-28764-0