Voir la notice de l'article provenant de la source European Digital Mathematics Library
@article{MM2_1976__18_154387, author = {Keijo Hild\'en}, title = {Symmetrization of {Functions} in {Sobolev} {Spaces} and {The} {Isoperimetric} {Inequality.}}, journal = {Manuscripta mathematica}, pages = {215--236}, publisher = {mathdoc}, volume = {18}, year = {1976}, zbl = {0365.46031}, url = {http://geodesic.mathdoc.fr/item/MM2_1976__18_154387/} }
Keijo Hildén. Symmetrization of Functions in Sobolev Spaces and The Isoperimetric Inequality.. Manuscripta mathematica, Tome 18 (1976), pp. 215-236. http://geodesic.mathdoc.fr/item/MM2_1976__18_154387/