@article{10_4007_annals_2009_169_41,
     author = {Ovidiu Savin},
     title = {Regularity of flat level sets in phase transitions},
     journal = {Annals of mathematics},
     pages = {41--78},
     year = {2009},
     volume = {169},
     number = {1},
     doi = {10.4007/annals.2009.169.41},
     mrnumber = {2480601},
     zbl = {1180.35499},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4007/annals.2009.169.41/}
}