Security and Intelligent Information Systems International Joint Conferences, SIIS 2011, Warsaw, Poland, June 13-14, 2011, Revised Selected Papers - Bouvry, Pascal; Kłopotek, Mieczysław A.; Leprévost, Franck; Marciniak, Małgorzata; Mykowiecka, Agnieszka; Rybiński, Henryk (Springer Berlin Heidelberg : Imprint: Springer, 2012)