Citation: Destro, Riccardo; Ruffo, Riccardo; Roversi, Pietro; Soave, Raffaella; Loconte, Laura; Lo Presti, Leonardo (2017). Anharmonic motions versus dynamic disorder at the Mg ion from the charge densities in pyrope (Mg~3~Al~2~Si~3~O~12~) crystals at 30K: six of one, half a dozen of the other. Acta Crystallographica Section B, 73, pp. 722-736.