1. Slow neutron spectroscopy and the grand atlas of the physical world;Brockhouse;Reviews of Modern Physics,1995
2. Experimental dispersion curves for phonons in aluminium;Yarnell,1965
3. Phonon dispersion relations in insulators;Bilz,1979
4. Dynamical theory of crystal lattices;Born,1954
5. The dynamics of atoms in crystals;Cochran,1973