@misc{indiciae7e76bf34d36a,
  title = {Colliding impulsive waves in succession.},
  author = {M Halilsoy},
  year = {1990},
  doi = {10.1103/physrevd.42.2922},
  url = {https://pubmed.ncbi.nlm.nih.gov/10013166/},
  note = {Source identifier: 10013166}
}