1. J. Kushibiki, A. Ohkubo, and N. Chubachi, Anisotropy detection in sapphire by acoustic microscope using line-focus beam, Electron. Lett. 17: 534 (1981).
2. J. Kushibiki, A. Ohkubo, and N. Chubachi, Acoustic anisotropy detection of materials by acoustic microscope using line-focus beam, IEEE Ultrasonics Symp. Proc., pp.552– 556 (1981).
3. J. Kushibiki, A. Ohkubo, and N. Chubachi, Material characterization by acoustic microscope with line-focus beam, in: “Acoustical Imaging, Vol. 12” E. A. Ash and C. R. Hill, eds., Plenum Press, London (1982).
4. J. Kushibiki, K. Horii, and N. Chubachi, Velocity measurement of multiple leaky waves on germanium by line-focus-beam acoustic microscope using FFT, Electron. Lett. 19: 404 (1983).
5. J. Kushibiki, A. Ohkubo, and N. Chubachi, Theoretical analysis of V(z) curves measured by acoustic line-focus beam, IEEE Ultrasonics Symp. Proc., pp.623– 628 (1982).