Language Engineering Essays in Theory and Practice of Applied Natural Language Computing Haugeneder, Hans (Ed.) Heftet / 2012 / Tysk
Innovative Internet Community Systems Third International Workshop, IICS 2003, Leipzig, Germany, June 19-21, 2003, Revised Papers Böhme, Thomas Heftet / 2003 / Engelsk
Wissensarten und ihre Darstellung Beiträge aus Philosophie, Psychologie, Informatik und Linguistik Heyer Gerhard Heftet / 1988 / Tysk
