@article{DAN_1991_321_2_a6,
     author = {N. A. Magnitskii},
     title = {A new formula for series expansion of a function of several},
     journal = {Doklady Akademii Nauk},
     pages = {266--269},
     year = {1991},
     volume = {321},
     number = {2},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1991_321_2_a6/}
}