TY  - JOUR
T1  - On the Surface Which Is the Envelope of Planes through the Points of an Ellipsoid at Right Angles to the Radius Vectors from the Centre. 
JF  - Proceedings of the Royal Society of London (1854-1905)
VL  - 9
SP  - 171
EP  - 172
PY  - 1857/01/01/
UR  - http://dx.doi.org/10.1098/rspl.1857.0041
M3  - doi:10.1098/rspl.1857.0041
AU  - Cayley, A.
ER  -