%0 Journal Article %A V. A. Ivanov %T On the ray origin in the Dirichlet spectrum a~problem of Diophantine approximations %J Zapiski Nauchnykh Seminarov POMI %D 1980 %P 164-185 %V 93 %I mathdoc %U http://geodesic.mathdoc.fr/item/ZNSL_1980_93_a8/ %G ru %F ZNSL_1980_93_a8