@misc{indiciaedc571d17ca12,
  title = {Interstellar bubbles. II - Structure and evolution},
  author = {Weaver, R. and Mccray, R. and Castor, J. and Moore, R. and Shapiro, P.},
  year = {1977},
  url = {https://ntrs.nasa.gov/citations/19780031574},
  note = {Source identifier: 19780031574}
}