1. Z/p-Actions on (S^n)^k,
Transactions of the American Mathematical Society,
300 (1987), 791-809

2. The Free Rank of Symmetry of (S^n)^k,
(joint with W. Browder) Inventiones Mathematicae, 92 (1988), 431-440

3. Cohomological Restrictions on Finite Group Actions,
Journal of Pure and Applied Algebra, 54 (1988), 117-139

4. Homology Representations of Finite Transformation
Groups,
Springer-Verlag Lecture Notes No. 1370, 1989

5. Cohomological Exponents of ZG-Lattices,
Journal of Pure and Applied Algebra, 58 (1989), 1-5

6. Torsion in Equivariant Cohomology,
Commentarii Mathematici Helvetici,
64 (1989), 401-411

7. On the Exponent of Cohomology of Discrete Groups,
Bulletin of the London Mathematical Society, 21 (1989)
585-590

8. Generalized Tate Homology, Homotopy Fixed-Points and the
Transfer, (joint with R. Cohen and W. Dwyer),
Contemporary Mathematics 96 (1989), 1-13

9. Symmetric Invariants and Cohomology of Groups,
(joint with J. Maginnis and R. J. Milgram),
Mathematische Annalen 287 (1990), 391-411

10. Discrete Groups with Large Exponents in Cohomology,
(joint with J. Carlson),
Journal of Pure and Applied Algebra 66 (1990), 111-120

11. The Geometry and Cohomology of the Mathieu Group M_12,
(joint with J. Maginnis and R. J. Milgram),
Journal of Algebra 139 (1991), 90-133

12. Cohomological Non-Vanishing for Modules over p-Groups,
Journal of Algebra 141 (1991), 376-381

13. Euler Characteristics and Cohomology of p-Local Discrete Groups,
Journal of Algebra 149 (1992), 183-196

14. On the K-theory of the Classifying Space of a Discrete Group,
Mathematische Annalen 292 (1992), 319-327

15. A_5-Invariants and the Cohomology of L_3(4) and Related Extensions, (joint with R. J. Milgram),
Proceedings of the London Mathematical Society 66, Part 1 (1993),
187-224

16. On the Geometry and Cohomology of Finite Simple Groups,
Proceedings of the 1990 Barcelona Topology Conference,
Springer-Verlag Lecture Notes
in Mathematics 1509 (1992), 1-9

17. Representations and K-theory of Discrete Groups,
Bulletin of the American Mathematical Society Vol.28, No.1
(1993), 95-98

18. Characters and K-theory of Discrete Groups,
Inventiones Mathematicae 114 (1993), 489-514

19. Invariants and Cohomology of Groups,
(joint with R. J. Milgram),
Boletin Sociedad Matematica Mexicana (Adem Memorial
Volume), Vol. 37 (1995), 1-22

20. The Cohomology of the Mathieu Group M_22,
(joint with R. J. Milgram),
Topology, Vol. 34 No. 2 (1995), 389-410

21.
Discrete Groups, Grothendieck Rings and Families of Finite
Subgroups,
Contemporary Mathematics Volume 188 (1995), 1-23

22. Linear Maps over Abelian Group Algebras,
(joint with R. G. Swan),
Journal of Pure and Applied Algebra 104 (1995) Vol.1 1-7

23. The Subgroup Structure and Mod 2 Cohomology of O'Nan's Sporadic
(joint with R. J. Milgram),
Journal of Algebra 176 (1995), 288-315

24.
The Mod 2 Cohomology Rings of Rank 3 Simple Groups are
Cohen Macaulay
(joint with R. J. Milgram),
Annals of Mathematics Studies Vol.138 (1995) 3-13

25.
Automorphisms and Cohomology of Discrete Groups,
Journal of Algebra 182 (1996), 721-737

26.
The Cohomology of the McLaughlin Group and Some Associated
Groups
(joint with R. J. Milgram),
Mathematische Zeitschrift Vol. 224 No. 4 (1997) 495-517

27. Essential Cohomology
of Finite Groups,
(joint with D. Karagueuzian), Commentarii Mathematici Helvetici
72 (1997) 101-109

28. Elementary Abelian Groups Acting on Products of Spheres,
(joint with D. J. Benson), Mathematische
Zeitschrift 228 (1998) 705-712

29.
On the Cohomology of SL_2(Z[1/p])
(joint with N. Naffah), London Mathematical
Society Lecture Note Series 252, pp. 1-9 (1998),
Cambridge University Press

30.
Buildings, Groups Extensions and Cohomology of Congruence
Subgroups,
Contemporary Mathematics 220 (1998) 1-15

31. Periodic Cyclic Cohomology of Group Rings,
(joint with M. Karoubi), Comptes Rendus de l'Academie
des Sciences (Paris), t. 326, Serie I, pp. 13-17, 1998

32. Topological Models and the Cohomology of Galois Groups,
(joint with Karagueuzian and Minac), Comptes Rendus de l'Academie
des Sciences (Paris), t. 326, Serie I, pp. 919-924, (1998)

33.
The Cohomology of the Lyons Group and Double Covers of
the Alternating Groups
(joint with D. Karagueuzian, R. J. Milgram and K. Umland),
Journal of Algebra 208, pp. 452-479 (1998)

34.
On Some Examples of Group Actions and Group Extensions
(joint with E. Yalcin), Journal of Group Theory 2, pp. 69--79 (1999)

35.
On Spaces with Periodic Cohomology,
(joint with Jeff Smith), Electronic Research Announcements of the AMS 6
(2000)

36.
On the Cohomology of Galois Groups Determined by Witt Rings
(joint with Karagueuzian and Minac), Advances in Mathematics 148, pp.105-160 (1999)

37.
Field Theory and the Cohomology of Some Galois Groups
(joint with Gao, Karagueuzian and Minac), Journal of Algebra 235, pp.608-635
(2001)

38.
On the Cohomology of Central Frattini Extensions
(joint with Pakianathan), Journal of Pure and Applied Algebra 159, pp.1-14
(2001)

39.
The Cohomology of the Sylow 2-subgroup of the Higman-Sims Group
(joint with Carlson, Karagueuzian and Milgram),
Journal of Pure and Applied Algebra 164, pp.275-305 (2001)

40.
Periodic Complexes and Group Actions
(joint with J.Smith),
Annals of Mathematics 154, pp. 407-435 (2001).

41. Finite Group
Actions on Acyclic 2--Complexes,
Bourbaki Lecture
No. 894, in Astérisque, Vol. 290 (2003), pp. 1--17.

42.
Twisted Orbifold K-theory
(joint with Y.Ruan), Communications in Mathematical Physics 237,
pp. 533--556 (2003).

43.
On Representations and K-theory of the Braid Groups
(joint with D.Cohen and F.Cohen), Mathematische Annalen 326, pp. 515--542
(2003).

44.
Constructing and Deconstructing Group Actions,
Contemporary Mathematics 346, pp. 1--8 (2004).

45.
Fixity and Free Group Actions on Products of Spheres
(joint with J.Davis and O.Unlu), Commentarii
Mathematici Helvetici 79, pp. 758-778 (2004).

46.
Toroidal Orbifolds, Gerbes and Group Cohomology
(joint with J.Pan),
Trans. Amer. Math. Soc. 358 (2006), 3969-3983.

47.
Lectures on the Cohomology of Finite Groups,
Contemporary Mathematics 436 (2007), 317-334.

48.
Commuting Elements and Spaces of Homomorphisms
(joint with F.Cohen), Mathematische Annalen 338 (2007), 587-626.
Erratum
(posted July 2009).

49.
A Stringy Product on Twisted Orbifold K-theory
(joint with Y.Ruan and B.Zhang),
invited paper in Morfismos (10th Anniversary Issue),
Vol. 11, No 2 (2007), 33-64.

50.
Compatible Actions and Cohomology of Crystallographic Groups
(joint with J.Ge, J.Pan and N.Petrosyan),
Journal of Algebra 320 (2008), 341-353.

51.
On decomposing suspensions of simplicial spaces
(joint with A.Bahri, M.Bendersky, F.Cohen, and S.Gitler),
Boletín Sociedad Matemática Mexicana
(3) Vol.15 (2009), 91-102.

52.
Stable splittings, spaces of representations and almost commuting
elements in Lie groups
(joint with Frederick R. Cohen and Jose Manuel Gomez),
Math. Proc. Camb. Phil. Soc. Vol. 149 (2010), 455-490.

53.
Lectures on Orbifolds and Group Cohomology
(joint with M.Klaus), Advanced Lectures in Mathematics 16
(Higher Education Press, edited by L.Ji and S-T Yau),
Transformation Groups and Moduli Spaces of Curves (2010), 1-17.

54.
Bundles, Cohomology and Truncated Symmetric Polynomials
(joint with Zinovy Reichstein), Documenta Mathematica 15 (2010), 1029-1047.

55.
Cohomology of toroidal orbifold quotients
(joint with Ali Duman and Jose Manuel Gomez), J. Algebra 344 (2011) 114-136.

56.
Commuting elements, simplicial spaces, and filtrations of classifying spaces
(joint with F.Cohen and E.Torres-Giese),
Math. Proc. Cam. Phil. Soc. Vol. 152 (2011), 91-114.

57.
On generators of crystallographic groups and actions on flat orbifolds
(joint with K.Dekimpe, N.Petrosyan and B.Putrycz),
Journal of Group Theory, Vol. 15, Issue 4, pp. 553--561 (2012).

58.
Equivariant K-theory of compact Lie group actions with maximal
rank isotropy
(joint with Jose Manuel Gomez), Journal of Topology
Vol. 5, No. 2, 431-457 (2012).

59.
On the Structure of Spaces of Commuting Elements in
Compact Lie Groups
(joint with Jose Manuel Gomez), pp. 1-26, in
Configuration Spaces: Geometry, Topology and Combinatorics,
Publ. Scuola Normale Superiore, Vol. 14
(CRM Series), 2012 (Birkhauser).

60.
Commuting elements in central products of special unitary groups
(joint with Frederick R. Cohen and Jose Manuel Gomez),
Proc. Edinburgh Math. Soc. (Series 2), Vol. 56, Issue 1, pp 1--12 (2013).

61.
A classifying space for commutativity in Lie groups
(joint with Jose Manuel Gomez), Algebraic & Geometric Topology
15 (2015) 493-535.

62.
Infinite loop spaces and nilpotent K-theory
(joint with Jose Manuel Gomez, John Lind and Ulrike Tillmann),
preprint 2015.

63.
Representation spaces for central extensions and almost
commuting unitary matrices
(joint with Man Chuen Cheng), preprint 2015.