@misc{indiciaef8b2b19ec3ac,
  title = {Dynamics of a momentless spherical shell made from an ideally rigid-plastic material},
  author = {Babichev, A. I.},
  year = {1966},
  url = {https://ntrs.nasa.gov/citations/19670010706},
  note = {Source identifier: 19670010706}
}