TY - JOUR T1 - Trichromatic Theory of Colour Vision. The Measurement of Retinal Fatigue JF - Proceedings of the Royal Society of London. Series A, Containing Papers of a Mathematical and Physical Character (1905-1934) VL - 87 IS - 597 SP - 415 EP - 427 PY - 1912/10/31/ UR - http://dx.doi.org/10.1098/rspa.1912.0095 M3 - doi:10.1098/rspa.1912.0095 AU - de W. Abney, W. ER -