TY  - JOUR
T1  - On the Calculus of Symbols. Second Memoir
JF  - Philosophical Transactions of the Royal Society of London (1776-1886)
VL  - 152
SP  - 253
EP  - 264
PY  - 1862/01/01/
UR  - http://dx.doi.org/10.1098/rstl.1862.0016
M3  - doi:10.1098/rstl.1862.0016
AU  - Russell, W.
ER  -