@article{6216,
  author = {M. A. J. Klik and T. Gregorkiewicz and I. V. Bradley and J. P. R. Wells},
  title = {Optically induced deexcitation of rare-earth ions in a semiconductor matrix},
  year = {2002},
  journal = {Physical Review Letters},
  volume = {89},
  number = {22},
  month = {Nov},
  isbn = {0031-9007},
  url = {<Go to ISI>://000179205100051 },
  language = {eng},
}