@article{AFM_2000_25_1_a4,
     author = {Schaller Paul Schmutz},
     title = {Geometric characterization of hyperelliptic {Riemann} surfaces},
     journal = {Annales Fennici Mathematici},
     pages = {85--90},
     year = {2000},
     volume = {25},
     number = {1},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/AFM_2000_25_1_a4/}
}