@misc{indiciae96c4d11aa347,
  title = {Effective collision cross sections in scattering experiments <effektive stossquerschnitte bei streuversuchen},
  author = {Berkling, K. and Helbing, R. and Kramer, K. and Pauly, H. and Schlier, C. and Toschek, P.},
  year = {1964},
  url = {https://ntrs.nasa.gov/citations/19640013136},
  note = {Source identifier: 19640013136}
}