@misc{indiciaebd4cfe3d8ddf,
  title = {Track etching parameters for plastics},
  author = {Blanford, G. E., Jr. and Walker, R. M. and Wefel, J. P.},
  year = {1970},
  url = {https://ntrs.nasa.gov/citations/19710039575},
  note = {Source identifier: 19710039575}
}