TY  - JOUR
T1  - Colour Photometry. Part III
JF  - Philosophical Transactions of the Royal Society of London. A (1887-1895)
VL  - 183
SP  - 531
EP  - 565
PY  - 1892/01/01/
UR  - http://dx.doi.org/10.1098/rsta.1892.0014
M3  - doi:10.1098/rsta.1892.0014
AU  - Abney, W.
AU  - Festing, E.
ER  -