@article{RM_1977_32_4_a10,
     author = {Vik. S. Kulikov},
     title = {Surjectivity of the period mapping for $K3$ surfaces},
     journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova},
     year = {1977},
     volume = {32},
     number = {4},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/RM_1977_32_4_a10/}
}