@article{ZNSL_1997_249_a14,
     author = {N. N. Ural'tseva},
     title = {On properties of the free boundary in the neighborhood of contact with the given boundary},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {303--312},
     publisher = {mathdoc},
     volume = {249},
     year = {1997},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_1997_249_a14/}
}