TY  - JOUR
T1  - Colour Photometry. Part II. The Measurement of Reflected Colours
JF  - Philosophical Transactions of the Royal Society of London. A (1887-1895)
VL  - 179
SP  - 547
EP  - 570
PY  - 1888/01/01/
UR  - http://dx.doi.org/10.1098/rsta.1888.0017
M3  - doi:10.1098/rsta.1888.0017
AU  - Abney, C.
AU  - Festing, M.
ER  -