Manifestation of defects in phonon spectra of binary zinc-blende compounds J. Polit, E. M. Sheregii, J. Cebulski, M. Pociask, A. Kisiel, A. Mycielski, B. V. Robouch, E. Burattini, A. Marcelli, M. Cestelli Guidi et al. (3 more) Eur. Phys. J. Appl. Phys., 27 1-3 (2004) 321-324 Published online: 15 July 2004 DOI: 10.1051/epjap:2004078