W. Kropatsch, Y. Haxhimusa:
"Hierarchical Grouping of Non-connected Structures";
in: "Digital Imaging in Media and Education, Proc. of the 28th Workshop of the Austrian Association for Pattern Recognition (OAGM/AAPR)", OCG Schriftenreihe, Österreichische Arbeitsgemeinschaft für Mustererkennung, 2004, 165 - 172.