A. Benmerkhi and  A. Bounouioua and  M. Bouchemat and  T. Bouchemat,  Study of Photonic Crystal Band Gap and Hexagonal Microcavity Based on Elliptical Shaped Holes.   journal   = {International Journal of Chemical and Molecular Engineering}, [online]. World Academy of Science, Engineering and Technology.
    October 2020, vol. 167(11). 257 - 260
    [viewed 04 May 2024]. Available from: https://publications.waset.org/pdf/10011570.