@article{AIHPC_2003__20_2_333_0,
     author = {Ferone, Adele and Volpicelli, Roberta},
     title = {Minimal rearrangements of {Sobolev} functions : a new proof},
     journal = {Annales de l'I.H.P. Analyse non lin\'eaire},
     pages = {333--339},
     publisher = {Elsevier},
     volume = {20},
     number = {2},
     year = {2003},
     doi = {10.1016/S0294-1449(02)00012-4},
     mrnumber = {1961519},
     zbl = {1038.49039},
     language = {en},
     url = {http://www.numdam.org/articles/10.1016/S0294-1449(02)00012-4/}
}