Ouedraogo, I., S. W. Igo, P. Simonis, A. Ouedraogo, and B. Zeghmati. “Reflectance Spectrum of a Color Blue Generated by Curved Multilayer and Iridescent of the Elytron of the Calidea Signata Bug”. European Scientific Journal, ESJ, Vol. 12, no. 36, Dec. 2016, p. 1, doi:10.19044/esj.2016.v12n36p1.