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@article{CMH_1955__29_139098, author = {G. P\'olya}, title = {More isoperimetric inequalities proved and conjectured.}, journal = {Commentarii mathematici Helvetici}, pages = {112--119}, publisher = {mathdoc}, volume = {29}, year = {1955}, zbl = {0068.36603}, url = {http://geodesic.mathdoc.fr/item/CMH_1955__29_139098/} }
G. Pólya. More isoperimetric inequalities proved and conjectured.. Commentarii mathematici Helvetici, Tome 29 (1955), pp. 112-119. http://geodesic.mathdoc.fr/item/CMH_1955__29_139098/