@article{VMUMM_1992_6_a18,
     author = {A. N. Yakivchik},
     title = {Proceedings of student's conference. {Mathematics}},
     journal = {Vestnik Moskovskogo universiteta. Matematika, mehanika},
     pages = {68--69},
     year = {1992},
     number = {6},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VMUMM_1992_6_a18/}
}