Stefano A. Cerri. Intelligent Tutoring Systems - 11th International Conference, ITS 2012, Chania, Crete, Greece, June 14-18, 2012. Proceedings. Stefano A. Cerri and William J. Clancey and Giorgos Papadourakis and Kitty Panourgia. Springer Verlag, pp.XXXIV-726, 2012, LNCS, 978-3-642-30949-6 (Print) 978-3-642-30950-2 (Online).
〈http://link.springer.com/book/10.1007/978-3-642-30950-2/page/1〉.
〈lirmm-00799116〉 
