@article{DE_1975_11_2_a1,
     author = {L. A. Bieza},
     title = {A criterion for a certain multidimensional discrimination problem},
     journal = {Differencialʹnye uravneni\^a},
     pages = {222--226},
     publisher = {mathdoc},
     volume = {11},
     number = {2},
     year = {1975},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1975_11_2_a1/}
}