%0 Journal Article %A S. M. Natanzon %T On the order of a finite group of homeomorphisms of a surface onto itself and the number of real forms of a complex algebraic curve %J Doklady Akademii Nauk %D 1978 %P 765-768 %V 242 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1978_242_4_a5/ %G ru %F DAN_1978_242_4_a5