@article{GDZPPN002297639,
title = {Special Coordinate Coverings of Riemann Surfaces.},
journal = {Mathematische Annalen},
volume = {174},
year = {1967},
pages = {67-86},
zbl = {0144.33501},
url = {http://dml.mathdoc.fr/item/GDZPPN002297639}
}
GUNNING, R.C. Special Coordinate Coverings of Riemann Surfaces.. Mathematische Annalen, Tome 174 (1967) pp. 67-86. http://gdmltest.u-ga.fr/item/GDZPPN002297639/