Emilio Corchado Xindong Wu Erkki Oja Álvaro Herrero Bruno Baruque Hybrid Artificial Intelligence Systems, 4th International Conference, HAIS 2009, Salamanca, Spain, June 10-12, 2009. Proceedings 5572 2009 http://dx.doi.org/10.1007/978-3-642-02319-4 978-3-642-02318-7 HAIS Lecture Notes in Computer Science Springer db/conf/hais/hais2009.html