Erica Melis; Jörg Siekmann
DFKI GmbH, DFKI Final Reports (FR), Vol. 01-08, 2001.
Michael Schillo; Klaus Fischer; Christian Kray
DFKI, DFKI Research Reports (RR), Vol. 01-03, 2001.
Christoph Georg Jung; Klaus Fischer
DFKI, DFKI Research Reports (RR), Vol. 01-01, 2001.