@misc{indiciae8eaa47cef023,
  title = {Note on Maxwell's field equations and the constitutive equations.},
  author = {Costen, R. C. and Staton, L. D.},
  year = {1966},
  url = {https://ntrs.nasa.gov/citations/19660063343},
  note = {Source identifier: 19660063343}
}