Advances in conceptual modeling challenging perspectives : ER 2009 Workshops CoMoL, ETheCoM, FP-UML, MOST-ONISW, QoIS, RIGiM, SeCoGIS, Gramado, Brazil, November 9-12, 2009 : proceedings - Heuser, Carlos Alberto; Pernul, Gunther 1961 (Lecture notes in computer science, 2009)