TY  - JOUR
T1  - On Systems of Circles and Spheres
JF  - Philosophical Transactions of the Royal Society of London (1776-1886)
VL  - 177
SP  - 481
EP  - 625
PY  - 1886/01/01/
UR  - http://dx.doi.org/10.1098/rstl.1886.0016
M3  - doi:10.1098/rstl.1886.0016
AU  - Lachlan, R.
ER  -