L2 cohomology and intersection homology of singular algebraic varieties
(with J. Cheeger and R. MacPherson) in Differential Geometry Princeton
University Annals of Math studies, S.T. Yau ed. Sept. 1981. Also translated into
Russian and published by MIR Press, Moscow USSR.

On the topology of complex algebraic maps (with R. MacPherson), Proc. of
Conference on Algebraic Geometry in La Rabida, Spain. Springer Lecture Notes
in Mathematics vol. 961 Springer Verlag, N.Y.

Morse theory for the intersection homology groups (with R.MacPherson)
Analyse et Topologie sur les Espaces Singulieres,
Astérisque 101
(1983), 135-192, Société Mathématique de France.

Simplicial intersection homology (with R. MacPherson). Appendix to
``Elementary construction of Perverse Sheaves'' by R. MacPherson and
K.Vilonen. Inv. Math. 84 (1986), 432-433

Combinatorial geometries, Schubert varieties, and convex polyhedra
(with I. M. Gelfand, R. MacPherson, and V. Serganova), Adv. Math. 63
(1987), 301-316.

On the topology of algebraic torus actions (with R. MacPherson), in
Algebraic Groups: Utrecht 1986, Springer Lecture Notes in Mathematics
vol 1271 (1987), 73-90.

On the Kunneth formula for intersection cohomology (with Daniel Cohen and
Lizhen Ji), Trans. Amer. Math. Soc. 333 (1992), 63-69.

L2 cohomology is intersection cohomology. in The Zeta Function of
Picard Modular Surfaces, R. Langlands and D. Ramakrishnan, ed., Centre de
Recherches Mathematiques, Univ. of Montreal Press, 1992, 47-64.

Lefschetz numbers of Hecke correspondences (with R. MacPherson), in
The Zeta Function of Picard Modular Surfaces, R. Langlands and
D. Ramakrishnan, ed. Publ. C.R.M., Univ. of Montreal Press, 1992, 465-478.

1993

The Local contribution to the Lefschetz Fixed Point Formula (with R.
MacPherson), Inv. Math. 111 (1993), 1-33.

Local intersection cohomology of the Baily-Borel
compactification (with G. Harder, R. MacPherson, and A. Nair),
Compositio Mathematica 134 (2002), 243-268.

Compactifications of modular varieties, in Harmonic Analysis, The Trace Formula, and Shimura Varieties,
Proceedings of the Clay Mathematics Institute 2003 Summer School,
Fields Institute, Toronto. J. Arthur, D. Ellwood, and R. Kottwitz, ed.,
Amer. Math. Soc. and Clay Math. Inst., 2005, pp. 551-582.