@article{05117820,
title = {The Betten-Walker spread and Cayley's ruled cubic surface.},
journal = {Beitr\"age zur Algebra und Geometrie},
volume = {47},
year = {2006},
pages = {527-541},
zbl = {1126.51003},
language = {en},
url = {http://dml.mathdoc.fr/item/05117820}
}
Havlicek, Hans; Riesinger, Rolf. The Betten-Walker spread and Cayley's ruled cubic surface.. Beiträge zur Algebra und Geometrie, Tome 47 (2006) pp. 527-541. http://gdmltest.u-ga.fr/item/05117820/