@article{DAN_1987_297_1_a8,
     author = {S. M. Natanzon},
     title = {Real meromorphic functions on real algebraic curves},
     journal = {Doklady Akademii Nauk},
     pages = {40--43},
     year = {1987},
     volume = {297},
     number = {1},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1987_297_1_a8/}
}