OBSERVATION OF KOHN-TYPE ANOMALIES IN THE ELECTRON-PHONON INTERACTION ON THE FERMI SURFACE OF DEGENERATE SEMICONDUCTORS D. G. CARLSON et A. SEGMÜLLER J. Phys. Colloques, 33 C4 (1972) C4-81-C4-83 DOI: 10.1051/jphyscol:1972417