Claude Grasland, France Guérin-Pace, Sophie De Ruffray, Timothée Giraud. A cognitive process of responding to a spatial survey: Textual analysis versus network analysis and spatial analysis for analysing an international corpus of co-citations about countries. 18th European Colloquium in Theoretical and Quantitative Geography (ECTQG), Sep 2013, Dourdan, France. 2013. <hal-01216591>

Claude Grasland, Thérèse Saint-Julien, Timothée Giraud, Laurent Beauguitte. Mental maps of students - Volume 4: Knowledge and attractiveness of cities and countries. 2011. <halshs-00654526>