SpringerLink (Online service), Popovich, V. V., Schrenk, M., Claramunt, C., & Korolenko, K. V. (2009). Information Fusion and Geographic Information Systems: Proceedings of the Fourth International Workshop, 17-20 May 2009 (1st ed. 2009.). Berlin, Heidelberg: Springer Berlin Heidelberg : Imprint: Springer.

SpringerLink (Online service), Vasily V. Popovich, Manfred Schrenk, Christophe Claramunt, and Kyrill V. Korolenko. Information Fusion and Geographic Information Systems: Proceedings of the Fourth International Workshop, 17-20 May 2009. 1st ed. 2009. Berlin, Heidelberg: Springer Berlin Heidelberg : Imprint: Springer, 2009.

SpringerLink (Online service), et al. Information Fusion and Geographic Information Systems: Proceedings of the Fourth International Workshop, 17-20 May 2009. 1st ed. 2009. Berlin, Heidelberg: Springer Berlin Heidelberg : Imprint: Springer, 2009.