@article{10_4007_annals_2005_162_525,
     author = {Miroslav Chleb{\'\i}k and Andrea Cianchi and Nicola Fusco},
     title = {The perimeter inequality under {Steiner} symmetrization: {Cases} of equality},
     journal = {Annals of mathematics},
     pages = {525--555},
     publisher = {mathdoc},
     volume = {162},
     number = {1},
     year = {2005},
     doi = {10.4007/annals.2005.162.525},
     mrnumber = {2178968},
     zbl = {1087.28003},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4007/annals.2005.162.525/}
}