H. D. Benisty, C. Neve, and . Weisbuch, Impact of planar microcavity effects on light extraction-Part I: basic concepts and analytical trends, IEEE Journal of Quantum Electronics, vol.34, issue.9, p.1612, 16321998.
DOI : 10.1109/3.709578

Y. Zhang, X. H. He, Y. H. Shih, M. Schurman, Z. C. Feng et al., Waveguide study and refractive indices of GaN:Mg epitaxial film, Optics Letters, vol.21, issue.19, pp.1529-1996
DOI : 10.1364/OL.21.001529