1. Identical relations in groups;Cross;D. Phil. dissertation,1961
2. The Theory of Groups;Hall,1959
3. Nilpotent groups;Hall,1957
4. On the p-length of p-soluble groups and reduction theorems for Burnside's problem;Hall,1956
5. Some remarks on varieties of groups;Higman;Quart. J. of Math. Oxford,1959