@article{RM_2000_55_6_a16,
     author = {S. M. Natanzon and S. V. Shadrin},
     title = {Topological classification of unitary functions of arbitrary genus},
     journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova},
     pages = {1163--1164},
     publisher = {mathdoc},
     volume = {55},
     number = {6},
     year = {2000},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/RM_2000_55_6_a16/}
}