@article{CRMATH_2021__359_10_1233_0,
     author = {Vardakis, Dimitris and Volberg, Alexander},
     title = {Free boundary problems in the spirit of {Sakai{\textquoteright}s} theorem},
     journal = {Comptes Rendus. Math\'ematique},
     pages = {1233--1238},
     publisher = {Acad\'emie des sciences, Paris},
     volume = {359},
     number = {10},
     year = {2021},
     doi = {10.5802/crmath.259},
     language = {en},
     url = {http://www.numdam.org/articles/10.5802/crmath.259/}
}