@article{GDZPPN002063204,
title = {Cylinders in Riemann surfaces},
journal = {Commentarii mathematici Helvetici},
volume = {54},
year = {1979},
pages = {1-5},
zbl = {0401.30036},
url = {http://dml.mathdoc.fr/item/GDZPPN002063204}
}
Randol, Burton. Cylinders in Riemann surfaces. Commentarii mathematici Helvetici, Tome 54 (1979) pp. 1-5. http://gdmltest.u-ga.fr/item/GDZPPN002063204/