
References
Marie-Laure Mugnier
with Leclère, M. (2006)., Simple conceptual graphs with atomic negation and difference, in P. Hitzler & P. Øhrstrøm (eds.), Conceptual structures: inspiration and application, Dordrecht, Springer, pp. 331-345.
with Chein, M. (2004)., Concept types and coreference in simple conceptual graphs, in K. E. Wolff, H. D. Pfeiffer & H. Delugach (eds.), Conceptual structures at work, Dordrecht, Springer, pp. 303-318.