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@article{JRAM_1976__285_151764, author = {Kenneth S. Williams}, title = {Note on a result of {Barrucand} and {Cohn.}}, journal = {Journal f\"ur die reine und angewandte Mathematik}, pages = {218--220}, publisher = {mathdoc}, volume = {285}, year = {1976}, zbl = {0325.10002}, url = {http://geodesic.mathdoc.fr/item/JRAM_1976__285_151764/} }
Kenneth S. Williams. Note on a result of Barrucand and Cohn.. Journal für die reine und angewandte Mathematik, Tome 285 (1976), pp. 218-220. http://geodesic.mathdoc.fr/item/JRAM_1976__285_151764/