@article{10_4171_ifb_169,
     author = {Eugen Varvaruca},
     title = {Some geometric and analytic properties of solutions of {Bernoulli} free-boundary problems},
     journal = {Interfaces and free boundaries},
     pages = {367--381},
     year = {2007},
     volume = {9},
     number = {3},
     doi = {10.4171/ifb/169},
     url = {http://geodesic.mathdoc.fr/articles/10.4171/ifb/169/}
}