%0 Journal Article %A E. P. Aksent'eva %T On the question of the existence of univalent halves of symmetric Riemann surfaces %J Trudy seminara po kraevym zadačam %D 1976 %P 49-55 %V 13 %N 13 %I mathdoc %U http://geodesic.mathdoc.fr/item/KUKZ_1976_13_13_a5/ %G ru %F KUKZ_1976_13_13_a5