Groups of Exponent 4 as Automorphism Groups. Kurt A. Hirsch; J.T. Hallett — 1970 Mathematische Zeitschrift
Finite Groups of Exponent 12 as Automorphism Groups. Kurt A. Hirsch; J. Terry Hallett — 1977 Mathematische Zeitschrift
Finite Groups of Exponent 4 as Automorphism Groups. II. J. Terry Tallett; Hirsch Kurt A. — 1973 Mathematische Zeitschrift