@article{INTG_1974_6_a3,
     author = {G. F. Laptev},
     title = {On the invariant analytic theory of differentiable mappings},
     journal = {Itogi Nauki i Tekhniki. Seriya Problemy Geometrii. Trudy Geometricheskogo Seminara},
     pages = {37--42},
     publisher = {mathdoc},
     volume = {6},
     year = {1974},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/INTG_1974_6_a3/}
}