@article{GDZPPN002221535,
title = {Unisecant curves on a general ruled surface.},
journal = {Manuscripta mathematica},
volume = {25},
year = {1978},
pages = {169-178},
zbl = {0405.14004},
url = {http://dml.mathdoc.fr/item/GDZPPN002221535}
}
Ghione, Franco; Lascu, Alexandru T. Unisecant curves on a general ruled surface.. Manuscripta mathematica, Tome 25 (1978) pp. 169-178. http://gdmltest.u-ga.fr/item/GDZPPN002221535/