Tunnelling investigation of the phonon spectrum of superconducting Be implications for an eventual enhancement of Tc A. Léger, J. Klein, S. De Cheveigne, M. Belin et D. DefourneauJ. Physique Lett., 36 12 (1975) 301-304DOI: https://doi.org/10.1051/jphyslet:019750036012030100
