@article{IM_1982__67_142897,
     author = {Sidney M. Webster and Carlos E. Kenig},
     title = {The {Local} {Hull} of {Holomorphy} of a {Surface} in the {Space} of {Two} {Complex} {Variables.}},
     journal = {Inventiones mathematicae},
     pages = {1--22},
     publisher = {mathdoc},
     volume = {67},
     year = {1982},
     zbl = {0489.32007},
     url = {http://geodesic.mathdoc.fr/item/IM_1982__67_142897/}
}