TY  - JOUR
T1  - The Differential Invariants of a Surface, and Their Geometric Significance. 
JF  - Proceedings of the Royal Society of London (1854-1905)
VL  - 71
SP  - 331
EP  - 332
PY  - 1902/01/01/
UR  - http://dx.doi.org/10.1098/rspl.1902.0102
M3  - doi:10.1098/rspl.1902.0102
AU  - Forsyth, A.
ER  -