Christoph Klauck; Johannes Schwagereit
DFKI, DFKI Research Reports (RR), Vol. 93-04, 1993.
Franz Baader; Bernhard Hollunder; Bernhard Nebel; Hans-Jürgen Profitlich; Enrico Franconi
DFKI, DFKI Research Reports (RR), Vol. 93-03, 1993.