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@article{MZ_1969__112_171220, author = {Harold N. Ward}, title = {Automorphisms of {Quaternion-Free} {2-Groups.}}, journal = {Mathematische Zeitschrift}, pages = {52--58}, publisher = {mathdoc}, volume = {112}, year = {1969}, zbl = {0214.04203}, url = {http://geodesic.mathdoc.fr/item/MZ_1969__112_171220/} }
Harold N. Ward. Automorphisms of Quaternion-Free 2-Groups.. Mathematische Zeitschrift, Tome 112 (1969), pp. 52-58. http://geodesic.mathdoc.fr/item/MZ_1969__112_171220/