@article{DAN_1992_327_4_a7,
     author = {V. A. Yakubovich},
     title = {Functional identification of a linear infinite-dimensional object},
     journal = {Doklady Akademii Nauk},
     pages = {455--459},
     year = {1992},
     volume = {327},
     number = {4},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1992_327_4_a7/}
}