Object and Process Management for the Integration of Hetreogeneous CIM Components. - Norbert Kiesel; J. Schwartz; Bernhard Westfechtel (GI Jahrestagung, 1992)

GRAS, a Graph-Oriented (Software) Engineering Database System. - Norbert Kiesel; Andy Schürr; Bernhard Westfechtel (Inf. Syst., 1995)

GRAS: A Graph-Oriented Software Engineering Database System. - Norbert Kiesel; Andy Schürr; Bernhard Westfechtel (IPSEN Book, 1996)