https://science.sciencemag.org/content/247/4939/214/tab-pdf (Publisher version)
Logothetis, N., Schiller, P., Charles, E., & Hurlbert, A. (1990). Perceptual deficits and the activity of the color-opponent and broad-band pathways at isoluminance. Science, 247(4939), 214-217. doi:10.1126/science.2294602.