%0 Journal Article %A A. N. Todorov %T Epimorphic period mapping for $K3$-surfaces that can be represented as double planes %J Matematičeskie zametki %D 1979 %P 465-474 %V 26 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/MZM_1979_26_3_a14/ %G ru %F MZM_1979_26_3_a14