A. Ion, Y. Haxhimusa, W. Kropatsch, L. Brun:
"Hierarchical Image Partitioning using Combinatorial Maps";
in: "10th Computer Vision Winter Workshop - CVWW 2005", A. Hanbury, H. Bischof (ed.); issued by: PRIP TU Wien and ICG TU Graz; Eigenverlag, 2005, 43 - 52.
http://aleph.ub.tuwien.ac.at/F?base=tuw01&func=find-c&ccl_term=AC05936513