@article{GDZPPN002229358,
title = {Smooth surfaces of degree 9 in G(1,3).},
journal = {Manuscripta mathematica},
volume = {61},
year = {1988},
pages = {417-436},
zbl = {0673.14026},
url = {http://dml.mathdoc.fr/item/GDZPPN002229358}
}
Verra, Alessandro. Smooth surfaces of degree 9 in G(1,3).. Manuscripta mathematica, Tome 61 (1988) pp. 417-436. http://gdmltest.u-ga.fr/item/GDZPPN002229358/