@misc{indiciaebe3f37566b72,
  title = {Comment on approximate molecular orbitals. III.},
  author = {Hirschfelder, J. O. and Lyon, W. D. and Matcha, R. L.},
  year = {1968},
  url = {https://ntrs.nasa.gov/citations/19690032558},
  note = {Source identifier: 19690032558}
}