@misc{indiciae5bb9acafa5a0,
  title = {Type-I spontaneous parametric down-conversion with a strongly focused pump},
  author = {Di Lorenzo Pires, H and Exter, M P. van},
  year = {2011},
  doi = {10.1103/physreva.83.033837},
  url = {https://www.osti.gov/biblio/21541394},
  note = {Source identifier: 21541394}
}