1. Feldman, R., Sanger, J.: The Text Mining Handbook: Advanced Approaches in Analyzing Unstructured Data. Cambridge University Press (2007)
2. Paralič, J., Furdík, K., Tutoky, G., Bednár, P., Sarnovský, M., Butka, P., Babič, F.: Text Mining (in Slovak: Dolovanie znalostí z textov). Equilibria, Košice, p. 184 (2010)
3. Sebastiani, F.: Machine learning in automated text categorization. J. ACM Comput. Surv. (CSUR) 34(1), 1–47 (2002)
4. Machová, K., Bednár, P., Mach, M.: Various approaches to web information processing. Comput. Inf. 26(3), 301–327 (2007)
5. Sarnovský, M., Butka, P., Paralič, J.: Grid-based support for different text mining tasks. Acta Polytechnica Hungarica 6(4), 5–27 (2009)