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@article{MZ_1965__90_170492, author = {James E. Roseblade}, title = {The permutability of orthogonal subnormal subgroups.}, journal = {Mathematische Zeitschrift}, pages = {365--372}, publisher = {mathdoc}, volume = {90}, year = {1965}, zbl = {0131.02203}, url = {http://geodesic.mathdoc.fr/item/MZ_1965__90_170492/} }
James E. Roseblade. The permutability of orthogonal subnormal subgroups.. Mathematische Zeitschrift, Tome 90 (1965), pp. 365-372. http://geodesic.mathdoc.fr/item/MZ_1965__90_170492/