@article{VMUMM_1987_1_a2,
     author = {V. I. Zaitsev},
     title = {On a problem of {P.\,S.~Aleksandrov}},
     journal = {Vestnik Moskovskogo universiteta. Matematika, mehanika},
     pages = {9--12},
     publisher = {mathdoc},
     number = {1},
     year = {1987},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VMUMM_1987_1_a2/}
}