%0 Journal Article %A E. P. Aksent'eva %T On the question of existence of single-sheeted halves of symmetric Riemann surfaces %J Trudy seminara po kraevym zadačam %D 1974 %P 19-24 %V 11 %N 11 %I mathdoc %U http://geodesic.mathdoc.fr/item/KUKZ_1974_11_11_a2/ %G ru %F KUKZ_1974_11_11_a2