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@article{CMH_1984__59_139971, author = {Christopher B. Croke}, title = {A sharp four dimensional isoperimetric inequality.}, journal = {Commentarii mathematici Helvetici}, pages = {187--192}, publisher = {mathdoc}, volume = {59}, year = {1984}, zbl = {0552.53017}, url = {http://geodesic.mathdoc.fr/item/CMH_1984__59_139971/} }
Christopher B. Croke. A sharp four dimensional isoperimetric inequality.. Commentarii mathematici Helvetici, Tome 59 (1984), pp. 187-192. http://geodesic.mathdoc.fr/item/CMH_1984__59_139971/