@misc{indiciaeb4e48c511f78,
  title = {Efficiency and threshold pump intensity of CW solar-pumped solid-state lasers},
  author = {Hwang, In H. and Lee, Ja H.},
  year = {1991},
  url = {https://ntrs.nasa.gov/citations/19910072039},
  note = {Source identifier: 19910072039}
}