TY  - JOUR
T1  - Luminosity and Photometry
JF  - Proceedings of the Royal Society of London (1854-1905)
VL  - 61
SP  - 49
EP  - 50
PY  - 1897/01/01/
UR  - http://dx.doi.org/10.1098/rspl.1897.0011
M3  - doi:10.1098/rspl.1897.0011
AU  - Haycraft, J.
ER  -