@article{MZM_1996_60_4_a9,
     author = {V. K. Beloshapka},
     title = {Local invariants and prohibitions on mappings of {CR-manifolds}},
     journal = {Matemati\v{c}eskie zametki},
     pages = {588--592},
     publisher = {mathdoc},
     volume = {60},
     number = {4},
     year = {1996},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_1996_60_4_a9/}
}