B. Melichar, M. Ceska, K.Jezek, K. Richta: Construction of Compilers (in czech), Vydavatelstvi CVUT, Praha 1999, J.Hynek, K.Jezek, O.Rohlik: Short Document Categorization - Itemsets Method, PKDD 4-th European Conf. Workshop Machine Learning and K.Jezek, M.Zima: Query Optimization in Deductive Programs with Aggregares, Proc. ISM'01 Int. Conf., K.Jezek, M.Zima: Query Optimization in Deductive Programs with Aggregares, Proc. ISM'01 Int. Conf.,