@misc{indiciae6d93e2e1a335,
  title = {Nonlinear wave evolution in the expanding solar wind.},
  author = {R Grappin and M Velli and A Mangeney},
  year = {1993},
  doi = {10.1103/physrevlett.70.2190},
  url = {https://pubmed.ncbi.nlm.nih.gov/10053493/},
  note = {Source identifier: 10053493}
}