On the group S L 2 over orders of arithmetic type.
On the inverse limit of free nilpotent groups.
On the Kneser-Tits problem.
On the Nielsen Method in Free Products with Amalgamated Subgroups.
On the number of generating pairs for the groups and .
On the squares of sets of linear groups
On the SQ-universality of T(6)-groups.
On the structure of the centralizer of a braid
On the verbal width of finitely generated pro- groups.
On Tits' conjecture and other questions concerning Artin and generalized Artin groups.
One-Relator Groups and the Lower Central Series. II. Invariants of One-Relator Groups.
Operator Algebras Associated with Free Products of Groups with Amalgamation.
Order Reduced Reidemeister-Schreier Subgroup Presentations and Applications.