TY  - JOUR
T1  - On the Refraction-Equivalents of the Elements. 
JF  - Proceedings of the Royal Society of London (1854-1905)
VL  - 18
SP  - 49
EP  - 51
PY  - 1869/01/01/
UR  - http://dx.doi.org/10.1098/rspl.1869.0017
M3  - doi:10.1098/rspl.1869.0017
AU  - Gladstone, J.
ER  -
