TY - JOUR T1 - A Test of the S/P ratio as a correlate for brightness perception using rapid-sequential and side-by-side experimental protocols JO - LEUKOS - Journal of Illuminating Engineering Society of North America PY - 2009/01/01 AU - Houser KW AU - Fotios SA AU - Royer MP ED - DO - DOI: 10.1582/LEUKOS.2009.06.02003 VL - 6 IS - 2 SP - 119 EP - 137 Y2 - 2025/06/18 ER -