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@article{DAN_1989_308_1_a10, author = {K. E. Starkov}, title = {A global property of an observation space}, journal = {Doklady Akademii Nauk}, pages = {50--52}, publisher = {mathdoc}, volume = {308}, number = {1}, year = {1989}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1989_308_1_a10/} }
K. E. Starkov. A global property of an observation space. Doklady Akademii Nauk, Tome 308 (1989) no. 1, pp. 50-52. http://geodesic.mathdoc.fr/item/DAN_1989_308_1_a10/