TY  - JOUR
T1  - A Memoir upon Caustics. 
JF  - Proceedings of the Royal Society of London (1854-1905)
VL  - 8
SP  - 110
EP  - 111
PY  - 1856/01/01/
UR  - http://dx.doi.org/10.1098/rspl.1856.0033
M3  - doi:10.1098/rspl.1856.0033
AU  - Cayley, A.
ER  -