R. Farbey, K. Eaton, and A. Santini. Primary dental care : journal of the Faculty of General Dental Practitioners (UK), 17 (4):
168-72(October 2010)6040<m:linebreak></m:linebreak>JID: 9617339; ppublish;<m:linebreak></m:linebreak>Disseny.
A. Hotho, R. Jäschke, C. Schmitz, and G. Stumme. Proceedings of the First Conceptual Structures Tool Interoperability Workshop at the 14th International Conference on Conceptual Structures, page 87-102. Aalborg, Aalborg Universitetsforlag, (2006)