@misc{indiciae6aa6d3a08180,
  title = {Simple waves and shocks in the shallow two-layer fluid.},
  author = {D Müller},
  year = {1990},
  doi = {10.1103/physreva.41.4298},
  url = {https://pubmed.ncbi.nlm.nih.gov/9903623/},
  note = {Source identifier: 9903623}
}