@article{ZNSL_2004_310_a10,
     author = {H. Shahgholian},
     title = {When does the free boundary enter into corner points of the fixed boundary?},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {213--225},
     year = {2004},
     volume = {310},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_2004_310_a10/}
}