Jian Zhou Haruhiko Shirai Isamu Takahashi Jousuke Kuroiwa Tomohiro Odaka Hisakazu Ogura Masquerade detection by boosting decision stumps using UNIX commands. 311-318 2007 26 Computers & Security 4 http://dx.doi.org/10.1016/j.cose.2006.11.008 db/journals/compsec/compsec26.html#JianSTKOO07