1. Finitely presented metabelian groups;Baumslag,1974
2. Almost finitely presented soluble groups;Bieri;Comment. Math. Helv.,1978
3. Valuations and finitely presented metabelian groups;Bieri;Proc. London Math. Soc.,1980
4. Cohomology of Groups;Brown,1982
5. Transitivity systems of certain one relator groups;Brunner,1974