To effect the precise examination of the interference colors of thin layers, the author calculated them in cases of non-reflecting layers and Newton’s rings, and plotted the results on the I. C. I. graph. The significance of several results indicated by the graphs is discussed.
HIROSHI KUBOTA, "On the Interference Color of Thin Layers on Glass Surface," J. Opt. Soc. Am. 40, 146-149 (1950)