@misc{indiciae2c7113d809ab,
  title = {NDE Methods for the External Tank Spray on Foam Insulation},
  author = {Walker, James L. and Johnson, Kenneth L. and Santos, Fernando E. and Ussery, W. Warren},
  year = {2007},
  url = {https://ntrs.nasa.gov/citations/20070018821},
  note = {Source identifier: 20070018821}
}