Gesellschaft für Informatik & Deussen, P. (1981). Theoretical computer science: 5th GI-conference, Karlsruhe, March 23-25, 1981. Springer-Verlag.
Lua i Stíl Chicago (17ú heag.)Gesellschaft für Informatik agus Peter Deussen. Theoretical Computer Science: 5th GI-conference, Karlsruhe, March 23-25, 1981. Berlin ; New York: Springer-Verlag, 1981.
Lua MLA (8ú heag.)Gesellschaft für Informatik agus Peter Deussen. Theoretical Computer Science: 5th GI-conference, Karlsruhe, March 23-25, 1981. Springer-Verlag, 1981.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.