@misc{indiciaefadad86aabb2,
  title = {Rarefied gas flow through annuli.},
  author = {Cowling, P. W. and Milligan, M. W. and Wilkerson, H. J.},
  year = {1968},
  url = {https://ntrs.nasa.gov/citations/19680046119},
  note = {Source identifier: 19680046119}
}