@article{articlef33768c6,
title   = {Optical transitions in ruby across the corundum to 'Rh IND.2''O IND.3' (II) phase transformation},
author = {Duan, W. H. and Paiva, G. and Wentzcovitch, R. M. and Fazzio, Adalberto},
year = {1998},
journal   = {Physical Review Letters}
}