@article{02057268,
title = {A free boundary problem related to single-layer potentials.},
journal = {Annales Academiae Scientiarum Fennicae. Mathematica},
volume = {27},
year = {2002},
pages = {21-46},
zbl = {1035.31001},
language = {en},
url = {http://dml.mathdoc.fr/item/02057268}
}
Ebenfelt, P.; Khavinson, D.; Shapiro, H. S. A free boundary problem related to single-layer potentials.. Annales Academiae Scientiarum Fennicae. Mathematica, Tome 27 (2002) pp. 21-46. http://gdmltest.u-ga.fr/item/02057268/