@article{ZVMMF_1972_12_6_a9,
     author = {N. A. Tikhonov},
     title = {The determination of certain non-linear characteristics of anisotropic media},
     journal = {\v{Z}urnal vy\v{c}islitelʹnoj matematiki i matemati\v{c}eskoj fiziki},
     pages = {1478--1488},
     publisher = {mathdoc},
     volume = {12},
     number = {6},
     year = {1972},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZVMMF_1972_12_6_a9/}
}