N. Tamura, Y. Fujii, P. Boonkhaw, U. Prayoon, and B. Kanchanasaka, “Colour vision in Finlayson’s squirrel (<i>Callosciurus finlaysonii</i>): is conspicuous pelage colour useful for species recognition?”, Trop Zool, vol. 30, no. 3, pp. 110–124, Jul. 2017.