@article{CM_1935__2__438_0, author = {Ruse, H. S.}, title = {The Cayley-Spottiswoode coordinates of a conic in 3-space}, journal = {Compositio Mathematica}, volume = {2}, year = {1935}, pages = {438-462}, zbl = {0012.27108}, mrnumber = {1556928}, language = {en}, url = {http://dml.mathdoc.fr/item/CM_1935__2__438_0} }
Ruse, H. S. The Cayley-Spottiswoode coordinates of a conic in 3-space. Compositio Mathematica, Tome 2 (1935) pp. 438-462. http://gdmltest.u-ga.fr/item/CM_1935__2__438_0/