TextVis: An Integrated Visual Environment for Text Mining. - David Landau; Ronen Feldman; Yonatan Aumann; Moshe Fresko; Yehuda Lindell; Orly Liphstat; Oren Zamir (PKDD, 1998)

Circle Graphs: New Visualization Tools for Text-Mining. - Yonatan Aumann; Ronen Feldman; Yaron Ben-Yehuda; David Landau; Orly Liphstat; Yonatan Schler (PKDD, 1999)