Felix Werner Joaquin Sitte Frédéric Maire On the Induction of Topological Maps from Sequences of Colour Histograms. 167-174 2007 DICTA http://dx.doi.org/10.1109/DICTA.2007.4426792 conf/dicta/2007 db/conf/dicta/dicta2007.html#WernerSM07