@misc{indiciae01e7c019acc2,
  title = {Cosmic ray antimatter: Is it primary or secondary?},
  author = {Stecker, F. W. and Protheroe, R. J. and Kazanas, D.},
  year = {1981},
  url = {https://ntrs.nasa.gov/citations/19810021537},
  note = {Source identifier: 19810021537}
}