1. Montello, D.R.: Navigation. In: Shah, P., Miyake, A. (eds.) Handbook of Visuospatial Thinking, pp. 257–294. Cambridge University Press, Cambridge (2005)
2. Meilinger, T.: Wayfinding with maps and verbal directions. In: Proceedings of Twenty-Seventh Annual Conference of the Cognitive Science Society, pp. 1473–1478 (2005)
3. Lecture Notes in Artificial Intelligence;B. Tversky,1998
4. Daniel, M.P., Denis, M.: Spatial descriptions as navigational aids: A cognitive analysis of route directions. Kognitionswissenschaft 7, 45–52 (1998)
5. Ghafourian, M., Karimi, H.A.: Universal navigation: Concept and algorithms. In: World Congress on Computer Science and Information Engineering, vol. 2, pp. 369–373. IEEE Computer Society, Los Alamitos (2009)