High pressure Raman study of La1-xCaxMnO3-δ manganitesA. Sacchetti, T. Corridoni, E. Arcangeletti and P. PostorinoEur. Phys. J. B, 66 3 (2008) 301-305DOI: https://doi.org/10.1140/epjb/e2008-00441-1