@article{IVM_1984_5_a1,
     author = {N. T. Amanov},
     title = {Differentiation of a~sequence of functions of two variables},
     journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
     pages = {8--15},
     publisher = {mathdoc},
     number = {5},
     year = {1984},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVM_1984_5_a1/}
}