Prum, R. O.; Morrison, R. L. & Ten Eyck, G. R. (1994). "Structural color production by constructive reflection from ordered collagen arrays in a bird (Philepitta castanea: Eurylaimidae)". Journal of Morphology. 222 (1): 61–72. doi:10.1002/jmor.1052220107. PMID29865414.
Prum, R. O.; Morrison, R. L. & Ten Eyck, G. R. (1994). "Structural color production by constructive reflection from ordered collagen arrays in a bird (Philepitta castanea: Eurylaimidae)". Journal of Morphology. 222 (1): 61–72. doi:10.1002/jmor.1052220107. PMID29865414.