@article{hanhan2014portable,
  title={Portable piezospectroscopy system: non-contact in-situ stress sensing through high resolution photo-luminescent mapping},
  author={Hanhan, I and Durnberg, E and Freihofer, G and Akin, P and Raghavan, S},
  journal={Journal of Instrumentation},
  volume={9},
  number={11},
  pages={P11005},
  year={2014},
  publisher={IOP Publishing}
}