@article{TIMM_2016_22_2_a5,
     author = {V. I. Berdyshev},
     title = {A trajectory in $\mathbb {R}^3$ concealed from observers},
     journal = {Trudy Instituta matematiki i mehaniki},
     pages = {47--54},
     publisher = {mathdoc},
     volume = {22},
     number = {2},
     year = {2016},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TIMM_2016_22_2_a5/}
}