Research
Some papers hard to find

The Ore condition, affiliated operators,
and the lamplighter group
(with Wolfgang Lück and Thomas Schick) Highdimensional
manifold topology, 315321, World Sci. Publ., River Edge, NJ, 2003.

Analytic versions of the zero divisor
conjecture
Geometry and
cohomology in group theory (Durham, 1994), 209248, London Math. Soc.
Lecture Note Ser., 252, Cambridge Univ. Press, Cambridge, 1998.

Cohomology of finite groups
Vorlesungen aus dem Fachbereich
Mathematik der Universität GH Essen [Lecture Notes in Mathematics at
the University of Essen], 21. Universität Essen, Fachbereich
Mathematik, Essen, 1992. ii+64 pp.

Zero divisors and
L^{2}(G)
C. R. Acad. Sci. Paris
Sér. I Math. 315 (1992), no. 1, 4953.

Groupes á dualité de Poincaré de dimension 2
(French. English
summary) [Poincaré duality groups of dimension 2] (with Beno Eckmann)
C. R. Acad. Sci. Paris Sér. I Math. 295 (1982), no. 6,
417418.
Published
papers and reviews
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Genealogy
Presentation to Graduate Students
on February 5, 2016.
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