@misc{indiciae30da5cec7937,
  title = {Long-persistence blue phosphors},
  author = {Yen, William M. and Jia, Weiyi and Lu, Lizhu and Yuan, Huabiao},
  year = {2000},
  url = {https://ntrs.nasa.gov/citations/20080004048},
  note = {Source identifier: 20080004048}
}