@article{DAN_1971_199_6_a0,
     author = {V. I. Arkin and V. L. Levin},
     title = {Extreme points of a certain set of measurable vector functions of several variables and convexity of the values of vector integrals},
     journal = {Doklady Akademii Nauk},
     pages = {1223--1226},
     publisher = {mathdoc},
     volume = {199},
     number = {6},
     year = {1971},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1971_199_6_a0/}
}