@article{GDZPPN00208404X,
title = {Derivation of Flocks of Quadratic Cones.},
journal = {Forum mathematicum},
volume = {2},
year = {1990},
pages = {163-174},
zbl = {0692.51006},
url = {http://dml.mathdoc.fr/item/GDZPPN00208404X}
}
Thas, J.A.; Bader, Laura; Lunardo, G. Derivation of Flocks of Quadratic Cones.. Forum mathematicum, Tome 2 (1990) pp. 163-174. http://gdmltest.u-ga.fr/item/GDZPPN00208404X/