TY  - JOUR
T1  - A Memoir on Abstract Geometry
JF  - Philosophical Transactions of the Royal Society of London (1776-1886)
VL  - 160
SP  - 51
EP  - 63
PY  - 1870/01/01/
UR  - http://dx.doi.org/10.1098/rstl.1870.0004
M3  - doi:10.1098/rstl.1870.0004
AU  - Cayley, P.
ER  -