INTERACTION OF PHONONS WITH POINT DEFECTSINTERACTION OF PHONONS WITH STRESS-SPLIT ACCEPTOR STATES IN Ge AND Si C. ELBAUM, T. FJELDLY et T. ISHIGURO J. Phys. Colloques, 33 C4 (1972) C4-95-C4-99 DOI: 10.1051/jphyscol:1972420