ANHARMONIC CONTRIBUTIONS TO THE THERMAL DIFFUSE X-RAY SCATTERING INTENSITY FROM SINGLE CRYSTALLINE SODIUM G. Fritsch, W. Dietz, R. Häring et E. Lüscher J. Phys. Colloques, 42 C6 (1981) C6-143-C6-145 DOI: 10.1051/jphyscol:1981643