@misc{indiciae24eb92b24eb3,
  title = {ABCD - Advanced bulkhead concept designs for launch and space vehicles.},
  author = {Bernstein, A. I. and Blumrich, J. F.},
  year = {1968},
  url = {https://ntrs.nasa.gov/citations/19680043335},
  note = {Source identifier: 19680043335}
}