On the Cohomology of Algebraic and Related Finite Groups.
On the Collapsing of Homogeneous Bundles.
On the composition factors of Weyl modules.
On the congruence subgroup problem
On the congruence subgroup problem, II.
On the Congruence Subgroups Problem: Determination of the "Metaplectic Kernel".
On the congruence-subgroup problem for some anisotropic algebraic groups over number fields.
On the conjugacy problem for Carter subgroups.
On the Cuspidal Cohomology of the Bianchi Modular Groups.
On the decomposition numbers of the finite unitary groups in non-defining characteristic.
On the Desingularization of the Unipotent Variety.
On the exponential map of almost simple real algebraic groups.
On the exponential map of the Lie groups locally isomorphic to .
On the exponential representation of .
On the Finiteness of the Number of Unipotent Classes.
On the Generation of Dyadic Integral Orthogonal Groups.
On the Green polynomial of classical groups.
On the group .
On the Group of Norm 1 Elements in a Division Algebra.
On the group S L 2 over orders of arithmetic type.