@misc{indiciae933c68199dcc,
  title = {Finite element solution for axisymmetrical shells.},
  author = {Lu, Z.-A. and Penzien, J. and Popov, E. P.},
  year = {1964},
  url = {https://ntrs.nasa.gov/citations/19650037320},
  note = {Source identifier: 19650037320}
}