@article{214306,
  author = {Lu Deng and Edward Hagley and M. and Ying Wu},
  title = {Ultraviolet single-photons on demand and entanglement of photons with a large frequency difference},
  year = {2004},
  number = {70},
  month = {2004-12-20},
  publisher = {Physical Review A},
  doi = {https://doi.org/10.1103/PhysRevA.70.063812},
  language = {en},
}