@article{rodrigues_pascual_zubov_1997,  title={On the Interatomic Correlations and Mean Square Relative Atomic Displacements in an Anharmonic BCC Crystal},  volume={27},  ISSN={0103-9733},  url={https://doi.org/10.1590/S0103-97331997000400004},  DOI={10.1590/S0103-97331997000400004},  number={4},  journal={Brazilian Journal of Physics},  publisher={Sociedade Brasileira de Física},  author={Rodrigues, C. G. and Pascual, M. F. and Zubov, V. I.},  year={1997},  month={Dec},  pages={448–455} }