1. The Hp-problem for groups with certain central factors cyclic;Gallian;Proc. Amer. Math. Soc.,1974
2. On the Hughes conjecture;Gallian;J. Algebra,1975
3. J. A. Gallian, The Hughes conjecture and groups with absolutely regular subgroups or ECF-subgroups, Proc. Amer. Math. Soc., to appear.
4. J. A. Gallian, More on the Hughes conjecture,to appear.
5. Elements of maximal order in finite p-groups;Hogan;Proc. Amer. Math. Soc.,1972