(mit Thomas Schick): Uniqueness of smooth extensions of generalized cohomology theories. J. Topol. 3 (2010), no. 1, 110–156
Index theory, eta forms, and Deligne cohomology, Memoirs American Mathematical Society 198 (2009), no. 928. ISBN 978-0-8218-4284-3
(mit Martin Olbrich): Group cohomology and the singularities of the Selberg zeta function associated to a Kleinian group. Ann. of Math. (2) 149 (1999), no. 2, 627–689.
(mit Martin Olbrich): Gamma-cohomology and the Selberg zeta function. J. Reine Angew. Math. 467 (1995), 199–219.
(mit Martin Olbrich): Selberg zeta and theta functions: a differential operator approach, Berlin, Akademie Verlag (1995). ISBN 3-05-501690-4
On the gluing problem for the η-invariant. J. Differential Geom. 41 (1995), no. 2, 397–448.