@article{IVM_1989_7_a3,
     author = {V. S. Mokeǐchev},
     title = {Reconstruction of coefficients in linear mathematical models, and nonlinear boundary problems},
     journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
     pages = {20--28},
     year = {1989},
     number = {7},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVM_1989_7_a3/}
}