Rüping, StefanStefanRüpingPunko, N.N.PunkoGünter, B.B.GünterGrosskreutz, HenrikHenrikGrosskreutz2022-03-102022-03-102008https://publica.fraunhofer.de/handle/publica/358653en005Procurement fraud discovery using similarity measure learningconference paper