@misc{indiciae536feb89923d,
  title = {Implementation of Free-Formulation-Based Flat Shell Elements into NASA Comet Code and Development of Nonlinear Shallow Shell Element},
  author = {Barut, A. and Madenci, Erdogan and Tessler, A.},
  year = {1997},
  url = {https://ntrs.nasa.gov/citations/19980007176},
  note = {Source identifier: 19980007176}
}