@article{TIMM_1998_5_a19,
     author = {S. V. Kruglikov},
     title = {On the separation property in a~priori problems of ensured control and estimation. {Operator} formalization},
     journal = {Trudy Instituta matematiki i mehaniki},
     pages = {267--276},
     publisher = {mathdoc},
     volume = {5},
     year = {1998},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TIMM_1998_5_a19/}
}