UV distributed Bragg reflectors build from porous silicon multilayersF. Morales, G. García, A. Luna, R. López, E. Rosendo, T. Díaz and H. JuárezJ. Eur. Opt. Soc.-Rapid Publ., 10 (2015) 15016DOI: https://doi.org/10.2971/jeos.2015.15016