@article{TIMM_2000_6_2_a8,
     author = {S. I. Kumkov and V. S. Patsko and S. G. Pyatko and A. A. Fedotov},
     title = {Informational sets in a~problem of observation of aircraft trajectory},
     journal = {Trudy Instituta matematiki i mehaniki},
     pages = {413--434},
     year = {2000},
     volume = {6},
     number = {2},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TIMM_2000_6_2_a8/}
}