LATTICE DYNAMICS OF THE CUBIC-TETRAGONAL PHASE TRANSITION IN KNb03 M. D. Fontana, G. E. Kugel et C. CarabatosJ. Phys. Colloques, 42 C6 (1981) C6-749-C6-751DOI: https://doi.org/10.1051/jphyscol:19816220
