webpage http://dx.doi.org/10.1109/IS.2008.4670465 http://www.scopus.com/inward/record.url?eid=2-s2.0-78650483126&partnerID=MN8TOARS
published in 2008 4th International IEEE Conference Intelligent Systems Journal 2008 4th International IEEE Conference Intelligent Systems, IS 2008 Proceedings