Hiroaki Kikuchi Naoya Fukuno Masato Terada Norihisa Doi Principal Components of Port-Address Matrices in Port-Scan Analysis. 956-968 2008 OTM Conferences (2) http://dx.doi.org/10.1007/978-3-540-88873-4_3 conf/otm/2008-2 db/conf/otm/otm2008-2.html#KikuchiFTD08