Tunneling investigations of the phonon spectrum of a Bi 2223 metal oxide at high pressures Svistunov, V. M. ; Tarenkov, V. Yu. ; D'Yachenko, A. I. ; Aoki, R. Abstract Publication: Physics of the Solid State Pub Date: October 1997 DOI: 10.1134/1.1129900 Bibcode: 1997PhSS...39.1572S