@article{VMUMM_2016_2_a6,
     author = {K. V. Chesnokova},
     title = {The mapping taking three points of a {Banach} space to their {Steiner} point},
     journal = {Vestnik Moskovskogo universiteta. Matematika, mehanika},
     pages = {40--44},
     year = {2016},
     number = {2},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VMUMM_2016_2_a6/}
}