Optical spectroscopy of high dielectric contrast 3D photonic crystalsP. V. Braun, R. W. Zehner, C. A. White, M. K. Weldon, C. Kloc, S. S. Patel and P. WiltziusEurophys. Lett., 56 2 (2001) 207-213DOI: https://doi.org/10.1209/epl/i2001-00507-2