@ARTICLE{LasSchKotMue04, author = {Laskov, P. and Sch\"afer, C. and Kotenko, I. and M{\"u}ller, K.-R.}, title = "Intrusion detection in unlabeled data with quarter-sphere Support Vector Machines (Extended Version)", journal = "Praxis der Informationsverarbeitung und Kommunikation", year = "2004", volume = "27", pages = "228--236", issue = "4", folder = "mlsec" }