@TechReport{buesching:96, author = "Dietrich Buesching", title = "Efficient pictograph detection using bitangents", institution = "Forschungsgruppe Bildverstehen (FG BV), Informatik IX", year = "1996", type = "Technical Report", number = "FGBV--96--06", address = "Technische Universit{\"a}t M{\"u}nchen", month = dec }