@misc{indiciaee8df0ed998ea,
  title = {Method of fabricating an object with a thin wall having a precisely shaped slit},
  author = {Christopher, P. A. and Gross, W. J. and Henley, W. H. and Swirsky, B. D.},
  year = {1974},
  url = {https://ntrs.nasa.gov/citations/19740088523},
  note = {Source identifier: 19740088523}
}