@misc{indiciaeb04bf5ad9729,
  title = {Singular plastic element: NASTRAN implementation and application},
  author = {Hussain, M. A. and Pu, S. L. and Lorensen, W. E.},
  year = {1977},
  url = {https://ntrs.nasa.gov/citations/19780004518},
  note = {Source identifier: 19780004518}
}