@misc{indiciae8cdaceb3a070,
  title = {SYMAT, COVAR: Test Procedures for Matrix Calculations},
  author = {Morris, W. L. and Wiginton, C. L. and Lowell, D. K.},
  year = {1972},
  url = {https://ntrs.nasa.gov/citations/19730020849},
  note = {Source identifier: 19730020849}
}