@misc{indiciaecff96967a4c6,
  title = {Time delay in the Einstein ring PKS 1830-211},
  author = {Van Ommen, T. D. and Jones, D. L. and Preston, R. A. and Jauncey, D. L.},
  year = {1995},
  url = {https://ntrs.nasa.gov/citations/19950064051},
  note = {Source identifier: 19950064051}
}