@article{DAN_1978_242_4_a5,
     author = {S. M. Natanzon},
     title = {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},
     journal = {Doklady Akademii Nauk},
     pages = {765--768},
     publisher = {mathdoc},
     volume = {242},
     number = {4},
     year = {1978},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1978_242_4_a5/}
}