@article{DAN_1970_191_6_a1,
     author = {P. K. Belobrov},
     title = {On the {Chebyshev} point of a system of planes in {Banach} space},
     journal = {Doklady Akademii Nauk},
     pages = {1206--1208},
     year = {1970},
     volume = {191},
     number = {6},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1970_191_6_a1/}
}