(1991). Symmetry of discrete mathematical structures and their symmetry groups: A collection of essays. Heldermann.
Chicago-Zitierstil (17. Ausg.)Symmetry of Discrete Mathematical Structures and Their Symmetry Groups: A Collection of Essays. Berlin: Heldermann, 1991.
MLA-Zitierstil (9. Ausg.)Symmetry of Discrete Mathematical Structures and Their Symmetry Groups: A Collection of Essays. Heldermann, 1991.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.