@misc{indiciaec81c81642adc,
  title = {A two-fluid solar wind model with anisotropic proton temperature},
  author = {Leer, E. and Axford, W. I.},
  year = {1971},
  url = {https://ntrs.nasa.gov/citations/19710029071},
  note = {Source identifier: 19710029071}
}