Maße auf -kompakten Räumen
In: Mathematische Zeitschrift, Jg. 1975, S. 185-190
Mastersymmetries for completely integrable systems in statistical mechanics
In: Applications of field theory to statistical mechanics : proceedings of the Sitges Conference on Statistical Mechanics, Sitges, Barcelona/Spain, June 10 - 15, 1984 (Lecture Notes in Physics : 216), Jg. 1985, S. 305-315Mastersymmetries, higher order time-dependent symmetries and conserved densities of nonlinear evolution equations
In: Progress of Theoretical Physics, Jg. 1983, S. 1508-1522