Kenneth Revett Sérgio Tenreiro de Magalhães Henrique M. D. Santos On the Use of Rough Sets for User Authentication Via Keystroke Dynamics. 145-159 2007 conf/epia/2007w EPIA Workshops http://dx.doi.org/10.1007/978-3-540-77002-2_13 db/conf/epia/epia2007w.html#RevettMS07