Acoustic phonon transmission spectra in piezoelectric AlN/GaN Fibonacci phononic crystals P. D. Sesion Jr, E. L. Albuquerque, C. Chesman and V. N. Freire Eur. Phys. J. B, 58 4 (2007) 379-387 Published online: 22 September 2007 DOI: 10.1140/epjb/e2007-00249-5