V. S. Subrahmanian Massimiliano Albanese Maria Vanina Martinez Dana S. Nau Diego Reforgiato Recupero Gerardo I. Simari Amy Sliva Octavian Udrea Jonathan Wilkenfeld 12-16 2007 22 IEEE Intelligent Systems 2 http://doi.ieeecomputersociety.org/10.1109/MIS.2007.25 db/journals/expert/expert22.html#SubrahmanianAMNRSSUW07