Mejía-Uriarte, E., R. Sato-Berrú, M. Navarrete, O. Kolokoltsev, and J. M. Saniger. “Determination of Phase Transition by Principal Component Analysis Applied to Raman Spectra of Polycristalline BATIO3 at Low and High Temperature”. Journal of Applied Research and Technology, vol. 10, no. 1, Feb. 2012, doi:10.22201/icat.16656423.2012.10.1.421.