Laclavík, Michal, Štefan Dlugolinský, Martin Šeleng, Marcel Kvassay, Emil Gatial, Zoltán Balogh, and Ladislav Hluchý. 2012. “Email Analysis and Information Extraction for Enterprise Benefit”. COMPUTING AND INFORMATICS 30 (1):57-87. https://www.cai.sk/ojs/index.php/cai/article/view/154.