@article{1077476568, author = {Helsel, R. G.}, title = {Remarks on the isoperimetric inequality}, journal = {Duke Math. J.}, volume = {18}, number = {1}, year = {1951}, pages = { 385-390}, language = {en}, url = {http://dml.mathdoc.fr/item/1077476568} }
Helsel, R. G. Remarks on the isoperimetric inequality. Duke Math. J., Tome 18 (1951) no. 1, pp. 385-390. http://gdmltest.u-ga.fr/item/1077476568/