@article{10_1090_S0894_0347_1991_1094437_0,
     author = {Bedford, Eric and Klingenberg, Wilhelm},
     title = {On the envelope of holomorphy of a 2-sphere in {{\dh}{\textparagraph}\^A{\texttwosuperior}}},
     journal = {Journal of the American Mathematical Society},
     pages = {623--646},
     publisher = {mathdoc},
     volume = {04},
     number = {3},
     year = {1991},
     doi = {10.1090/S0894-0347-1991-1094437-0},
     url = {http://geodesic.mathdoc.fr/articles/10.1090/S0894-0347-1991-1094437-0/}
}