@misc{indiciae9995847e8903,
  title = {Isotopic composition of heavy cosmic rays},
  author = {Maehl, R. C. and Isreal, M. H. and Klarmann, J.},
  year = {1973},
  url = {https://ntrs.nasa.gov/citations/19730022979},
  note = {Source identifier: 19730022979}
}