Highlights on Practical Applications of Agents and Multi-Agent Systems : International Workshops of PAAMS 2013, Salamanca, Spain, May 22-24, 2013. Proceedings - Juan M. Corchado, Javier Bajo, Jaroslaw Kozlak, Pawel Pawlewski, Jose M. Molina, Vicente Julian, Ricardo Azambuja Silveira, Rainer Unland, . Sylvain Giroux ((Communications in Computer and Information Science))