@TECHREPORT{tr_koestinger10,
    author = {Martin Koestinger and Peter M. Roth and Horst Bischof},
    title = {Planar Trademark and Logo Retrieval},
    institution = {Graz University of Technology, Inst. f.  Computer,
        Graphics and Vision},
    number = {ICG-TR-10/01},
    year = {2010}
}