@article{AFM_1991_16_1_a7,
     author = {Fumio Maitani and Hisashi Ishida},
     title = {Meromorphic functions of bounded valence on an open {Riemann} surface},
     journal = {Annales Fennici Mathematici},
     pages = {125--130},
     publisher = {mathdoc},
     volume = {16},
     number = {1},
     year = {1991},
     doi = {10.5186/aasfm.1991.1617},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.5186/aasfm.1991.1617/}
}