Point-contact spectra of single crystals were obtained, yielding the energy positions of all of the phonon modes up to 160meV. A relatively strong anisotropy of the spectra was observed. It was related to anisotropy of the phonon system. The point-contact electron-phonon interaction function and the point-contact electron-phonon interaction parameter were compared with calculated data and qualitative agreement was found. From the measured spectra, the temperature dependence of the electrical resistivity and heat capacity were calculated.

Point-Contact Spectroscopy of the Electron-Phonon Interaction in Single-Crystal LaB6. Samuely, P., Reiffers, M., Flachbart, K., Akimenko, A.I., Yanson, I.K., Ponomarenko, N.M., Paderno, Y.B.: Journal of Low Temperature Physics, 1988, 71[1-2], 49-61