@misc{indiciae5f36795599e4,
  title = {A complex vectorial formalism in general relativity.},
  author = {Cahen, M. and Debever, R. and Defrise, L.},
  year = {1967},
  url = {https://ntrs.nasa.gov/citations/19670043896},
  note = {Source identifier: 19670043896}
}