1. An example of a finitely presented solvable group;Abels,1979
2. Direct decompositions of finitely generated torsion free nilpotent groups;Baumslag;Math. Z.,1975
3. Some metacyclic groups with the same finite images;Baumslag;Compositio Math.,1974
4. Abelian Groups;Fuchs,1960
5. The Frattini subgroups of finitely generated groups;Hall,1961