@article{10_4171_ifb_30,
     author = {Mohammed Hayouni and Antoine Henrot and Nadia Samouh},
     title = {On the {Bernoulli} free boundary problem and related shape optimization problems},
     journal = {Interfaces and free boundaries},
     pages = {1--13},
     year = {2001},
     volume = {3},
     number = {1},
     doi = {10.4171/ifb/30},
     url = {http://geodesic.mathdoc.fr/articles/10.4171/ifb/30/}
}