Zur Strukturierung spezieller Permutationsnetzwerke. - Friedmar Wächter (1986)

Optimization of Special Permutation Networks Using Simple Algebraic Relations. - Friedmar Wächter (Parallel Algorithms and Architectures, 1987)

Realization of sets of permutations by permutation networks. - Reinhard Pöschel; Friedmar Wächter; Ferdinand Börner (Parcella, 1988)