@misc{indiciaea1829cc995b5,
  title = {First-order corrections to approximate solutions to two-point boundary-condition problems},
  author = {Andrus, J. F. and Greenleaf, W. G.},
  year = {1973},
  url = {https://ntrs.nasa.gov/citations/19740027804},
  note = {Source identifier: 19740027804}
}