@article{VYURM_2013_5_1_a6,
     author = {P. D. Lebedev and V. N. Ushakov},
     title = {A variant of a metric for unbounded convex sets},
     journal = {Vestnik \^U\v{z}no-Uralʹskogo gosudarstvennogo universiteta. Seri\^a, Matematika, mehanika, fizika},
     pages = {40--49},
     publisher = {mathdoc},
     volume = {5},
     number = {1},
     year = {2013},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VYURM_2013_5_1_a6/}
}