Alessandro Frossi Federico Maggi Gian Luigi Rizzo Stefano Zanero Selecting and Improving System Call Models for Anomaly Detection. 206-223 2009 DIMVA http://dx.doi.org/10.1007/978-3-642-02918-9_13 conf/dimva/2009 db/conf/dimva/dimva2009.html#FrossiMRZ09