TY  - JOUR
T1  - On a Method of Expressing by Signs the Action of Machinery
JF  - Philosophical Transactions of the Royal Society of London (1776-1886)
VL  - 116
SP  - 250
EP  - 265
PY  - 1826/01/01/
UR  - http://dx.doi.org/10.1098/rstl.1826.0022
M3  - doi:10.1098/rstl.1826.0022
AU  - Babbage, C.
ER  -