@misc{indiciae48d47d0c3ecd,
  title = {Permutation-algebraic formulation of spin-free transition density matrices.},
  author = {Matsen, F. A. and Poshusta, R. D.},
  year = {1966},
  url = {https://ntrs.nasa.gov/citations/19660050330},
  note = {Source identifier: 19660050330}
}