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BLAŤÁK, Jan. First-order Frequent Patterns in Text Mining. In EPIA'05, 12th Portuguese Conference on Artificial Intelligence. 1. vyd. Covilha, Portugal: Institute of Electrical and Electronics Engineers, Inc., 2005, s. 344-350. ISBN 0-7803-9365-1.Podrobněji: https://is.muni.cz/publication/598608/cs