@misc{indiciae9de183382808,
  title = {Material Flow During Friction Stir Welds},
  author = {Guerra, M. and McClure, J. C. and Murr, L. E. and Nunes, A. C. and Munafo, Paul M.},
  year = {2001},
  url = {https://ntrs.nasa.gov/citations/20010073775},
  note = {Source identifier: 20010073775}
}