1. Theory of lattice dynamics in the harmonic approximation;Maradudin,1965
2. Frequency spectrum of crystalline solids;Montroll;J. Chem. Phys.,1942
3. Frequency spectrum of crystalline solids 3. Body-centred cubic lattices;Montroll;J. Chem. Phys.,1944
4. Moment calculations in lattice dynamics, 2;Isenberg;J. Phys.,1971
5. Moment calculations in lattice dynamics 1. For lattice with nearest neighbor interactions;Isenberg;Phys. Rev.,1963