@article{raghavan2009ex,
  title={Ex-Situ Stress Measurements in Polycrystalline Ceramics Using Photo-Stimulated Luminescence Spectroscopy and High-Energy X-Rays},
  author={Raghavan, Seetha and Imbrie, Peter K},
  journal={Journal of the American Ceramic Society},
  volume={92},
  number={7},
  pages={1567--1573},
  year={2009},
  publisher={Wiley Online Library}
}