Eulalia Szmidt Janusz Kacprzyk Using Intuitionistic Fuzzy Sets in Text Categorization. 351-362 2008 ICAISC http://dx.doi.org/10.1007/978-3-540-69731-2_35 conf/icaisc/2008 db/conf/icaisc/icaisc2008.html#SzmidtK08