Unpublished Preprints:

1. A representation of generalized braid group in classical braid group . (IHES-preprint series, IHES/M/00/08 ,  math.GR/0108167 ).
2. Topology of 3-manifolds and a class of groups .( math.GT/0209121 ). (This paper is contained in Topology of 3-manifolds and a class of groups II).
   
3. L-theory of groups with unstable derived series. (4 pages) (arxiv:0704.2137). (This paper is contained in The fibered isomorphism conjecture in L-theory.)
4. On the isomorphism conjecture for groups acting on trees. (28 pages) (math.KT/0510297v5). (This paper is contained in The isomorphism conjecture for groups with generalized free product structure.