Advances in Spatial and Temporal Databases 11th International Symposium, SSTD 2009 Aalborg, Denmark, July 8-10, 2009 Proceedings - Mamoulis, Nikos; Seidl, Thomas; Pedersen, Torben Bach; Torp, Kristian; Assent, Ira (Springer Berlin Heidelberg : Imprint: Springer, 2009)