BACKWARD WAVE PHONON ECHOES AT 17 GHz IN SINGLE CRYSTALS OF LiTaO3, LiNbO3 AND Bi12SiO20 D. J. Meredith, J. A. Pritchard et J. K. WigmoreJ. Phys. Colloques, 42 C6 (1981) C6-870-C6-872DOI: https://doi.org/10.1051/jphyscol:19816258
