TY  - JOUR
T1  - On the Mechanical Performance of Logical Inference. 
JF  - Proceedings of the Royal Society of London (1854-1905)
VL  - 18
SP  - 166
EP  - 169
PY  - 1869/01/01/
UR  - http://dx.doi.org/10.1098/rspl.1869.0038
M3  - doi:10.1098/rspl.1869.0038
AU  - Jevons, W.
ER  -