@article{IVM_1991_7_a16,
     author = {A. P. Torokhtii},
     title = {Constructive approximation of nonlinear operators},
     journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
     pages = {81--84},
     publisher = {mathdoc},
     number = {7},
     year = {1991},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVM_1991_7_a16/}
}