@article{RM_1991_46_3_a7,
     author = {S. V. Burtsev},
     title = {Two implicit function theorems},
     journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova},
     pages = {215--216},
     publisher = {mathdoc},
     volume = {46},
     number = {3},
     year = {1991},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/RM_1991_46_3_a7/}
}