Ghazzal, Mohamed N.; Deparis, Olivier; De Coninck, Joel; Gaigneaux, Eric M. (2013). "Tailored refractive index of inorganic mesoporous mixed-oxide Bragg stacks with bio-inspired hygrochromic optical properties". Journal of Materials Chemistry C. 1 (39): 6202. doi:10.1039/c3tc31178c. ISSN2050-7526.
Ghazzal, Mohamed N.; Deparis, Olivier; De Coninck, Joel; Gaigneaux, Eric M. (2013). "Tailored refractive index of inorganic mesoporous mixed-oxide Bragg stacks with bio-inspired hygrochromic optical properties". Journal of Materials Chemistry C. 1 (39): 6202. doi:10.1039/c3tc31178c. ISSN2050-7526.