@article{DAN_1992_324_4_a7,
     author = {I. G. Tsar'kov},
     title = {Theorems on the global existence of an implicit function and their},
     journal = {Doklady Akademii Nauk},
     pages = {754--756},
     publisher = {mathdoc},
     volume = {324},
     number = {4},
     year = {1992},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1992_324_4_a7/}
}