TY - JOUR T1 - A Case of Abnormal Trichromatic Colour Vision Due to a Shift in the Spectrum of the Green-Sensation Curve JF - Proceedings of the Royal Society of London. Series A, Containing Papers of a Mathematical and Physical Character (1905-1934) VL - 89 IS - 610 SP - 232 EP - 245 PY - 1913/09/22/ UR - http://dx.doi.org/10.1098/rspa.1913.0081 M3 - doi:10.1098/rspa.1913.0081 AU - de W. Abney, W. AU - Watson, W. ER -