NEUTRON SPECTROSCOPY OF INTERNAL PHONONS OF NAPHTHALENE AND ANTHRACENE CRYSTALS E.L. Bokhenkov, A.I. Kolesnikov, T.A. Krivenko, E.F. Shek, V.A. Dementjev et I. Natkaniec J. Phys. Colloques, 42 C6 (1981) C6-605-C6-607 DOI: 10.1051/jphyscol:19816177