@article{DANMA_2021_501_a17,
     author = {V. I. Berdyshev},
     title = {Trajectory of an observer tracking the motion of an object around a convex set in $\mathbb{R}^3$},
     journal = {Doklady Rossijskoj akademii nauk. Matematika, informatika, processy upravleni\^a},
     pages = {95--97},
     publisher = {mathdoc},
     volume = {501},
     year = {2021},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DANMA_2021_501_a17/}
}