@article{VMUMM_1986_6_a11,
     author = {M. V. Yashina},
     title = {On the density of the sets of uniqueness of some extremal problems},
     journal = {Vestnik Moskovskogo universiteta. Matematika, mehanika},
     pages = {54--56},
     publisher = {mathdoc},
     number = {6},
     year = {1986},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VMUMM_1986_6_a11/}
}