In: Berthold Hoffmann; Dieter Hutter; Hui Shi (Hrsg.). International Journal of Software and Informatics (IJSI), Vol. 9, No. 2, Pages 1-93, Institute of Software, the Chinese Academy of Sciences, 8/2015.
In: Frank Drewes; Annegret Habel; Berthold Hoffmann; Detlef Plump (Hrsg.). Manipulation of Graphs, Algebras and Pictures. Essays Dedicated to Hans-Jörg Kreowski on the Occasion of His 60th Birthday. Pages 269-286, Universität Bremen, 2009.
In: Berthold Hoffmann; Till Mossakowski; Lutz Schröder. Festschrift Dedicated to Bernd Krieg-Brückner on the Occasion of his 60th Birthday. Pages 255-272, Sichere Kognitive Systeme, DFKI Bremen, 2009.