@article{TIMM_2015_21_1_a4,
     author = {V. I. Berdyshev},
     title = {On the problem of tracking a moving object by observers},
     journal = {Trudy Instituta matematiki i mehaniki},
     pages = {46--55},
     year = {2015},
     volume = {21},
     number = {1},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TIMM_2015_21_1_a4/}
}