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@article{DAN_1970_191_6_a6, author = {M. S. Nikol'skii}, title = {Ideally observable systems}, journal = {Doklady Akademii Nauk}, pages = {1224--1227}, publisher = {mathdoc}, volume = {191}, number = {6}, year = {1970}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1970_191_6_a6/} }
M. S. Nikol'skii. Ideally observable systems. Doklady Akademii Nauk, Tome 191 (1970) no. 6, pp. 1224-1227. http://geodesic.mathdoc.fr/item/DAN_1970_191_6_a6/