1. Perturbation theory and three body forces in hcp metals
2. On vibrations in space lattice;Born;Phys. Zeit.,1912
3. Dynamical Theory of Crystal Lattice;Born,1954
4. Phonons: Theory and experiments I––lattice dynamics and models of interatomic forces;Bruesch,1982
5. The dynamics of atoms in crystals;Cochran,1973