@article{SM_1977_31_1_a4,
     author = {G. M. Henkin},
     title = {H.~Lewy's equation and analysis on a~pseudoconvex {manifold.~II}},
     journal = {Sbornik. Mathematics},
     pages = {63--94},
     publisher = {mathdoc},
     volume = {31},
     number = {1},
     year = {1977},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SM_1977_31_1_a4/}
}