@misc{indiciae68a252127fc8,
  title = {HL-20 structural design comparison - Conformal shell versus cylindrical crew compartment},
  author = {Bush, Lance B. and Wahls, Deborah M. and Robinson, James C.},
  year = {1993},
  url = {https://ntrs.nasa.gov/citations/19930053439},
  note = {Source identifier: 19930053439}
}