@article{MZM_1990_47_5_a0,
     author = {E. R. Avakov},
     title = {Theorems on estimates in the neighborhood of a~singular point of a~mapping},
     journal = {Matemati\v{c}eskie zametki},
     pages = {3--13},
     year = {1990},
     volume = {47},
     number = {5},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_1990_47_5_a0/}
}