@article{IVM_1972_7_a13,
     author = {V. F. Sholohovich},
     title = {Nonstable extremal problems, and the geometric properties of the unit sphere in {a~Banach} space},
     journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
     pages = {113--118},
     publisher = {mathdoc},
     number = {7},
     year = {1972},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVM_1972_7_a13/}
}