TY  - JOUR
T1  - On the Direct Application of First Principles in the Theory of Partial Differential Equations. 
JF  - Proceedings of the Royal Society of London (1854-1905)
VL  - 43
SP  - 176
EP  - 177
PY  - 1887/01/01/
UR  - http://dx.doi.org/10.1098/rspl.1887.0121
M3  - doi:10.1098/rspl.1887.0121
AU  - Larmor, J.
ER  -