REFERENCES
- Frucht , R. ( 1938 ). Herstellung von Graphen mit vorgegebener abstrakten Gruppe . Compositio Math. 6 : 239 – 250 . [CSA]
- Hall , P. ( 1940 ). On groups of automorphisms . J. Reine Angew. Math. 182 : 194 – 204 . [CSA]
- Higman , G. ( 1960 ). Enumerating p-groups. I: Inequalities . Proc. London Math. Soc. 10 : 24 – 30 . [CSA]
- Huppert , B. ( 1967 ). Endliche Gruppen . Berlin, Heidelberg, New York : Springer Verlag .
- Quinlan , R. ( 2004 ). Real elements and real-valued characters of covering groups of elementary abelian 2-groups . J. Algebra 275 : 191 – 211 . [CSA] [CROSSREF]
- Webb , U. ( 1983 ). The number of stem covers of an elementary abelian p-group . Math. Z. 182 ( 3 ): 327 – 337 . [CSA] [CROSSREF]
- Communicated by A. Turull.