TY  - JOUR
T1  - The Fourth Colourless Sensation in the Three-Sensation Spectrum Curves when Measured on the Centre of the Retina
JF  - Proceedings of the Royal Society of London. Series A, Containing Papers of a Mathematical and Physical Character (1905-1934)
VL  - 94
IS  - 656
SP  - 1
EP  - 13
PY  - 1917/11/05/
UR  - http://dx.doi.org/10.1098/rspa.1917.0043
M3  - doi:10.1098/rspa.1917.0043
AU  - de W. Abney, W.
AU  - Smith, S.
ER  -