@article{DAN_1981_259_4_a3,
     author = {N. A. Kuznetsov and A. I. Yashin},
     title = {Conditions for identifiability of partially observable systems},
     journal = {Doklady Akademii Nauk},
     pages = {790--792},
     publisher = {mathdoc},
     volume = {259},
     number = {4},
     year = {1981},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1981_259_4_a3/}
}