@article{5540,
  author = {Mitchell Begelman},
  title = {The Acceleration and Collimation of Jets},
  year = {1995},
  journal = {Proceedings of the National Academy of Sciences},
  volume = {92},
  pages = {11442-11446},
  month = {12/1995},
  issn = {0027-8424},
  doi = {10.1073/pnas.92.25.11442},
}