@misc{indiciae881e0a20f0f9,
  title = {The 2p yields 1s pionic transition},
  author = {Andersen, D. K. and Jenkins, D. A. and Powers, R. J.},
  year = {1969},
  url = {https://ntrs.nasa.gov/citations/19690017590},
  note = {Source identifier: 19690017590}
}