Reflectivity properties of an anisotropic slab waveguide with isolated substrate - Gerolymatos, Panagiotis G.; Ioannidis, Zisis C.; Tigelis, Ioannis G.; Tzanetis, Emmanouil N.; Manenkov, Alexander B.; Amditis, Angelos J. (Journal of the Optical Society of America A, 2007)