TY  - JOUR
T1  - On Multiple contact of Surfaces. 
JF  - Proceedings of the Royal Society of London (1854-1905)
VL  - 23
SP  - 509
EP  - 510
PY  - 1874/01/01/
UR  - http://dx.doi.org/10.1098/rspl.1874.0081
M3  - doi:10.1098/rspl.1874.0081
AU  - Spottiswoode, W.
ER  -