@misc{indiciaebf73b1a9e311,
  title = {Observer time as a coordinate in relativistic spherical hydrodynamics.},
  author = {Hernandez, W. C., Jr. and Misner, C. W.},
  year = {1966},
  url = {https://ntrs.nasa.gov/citations/19660043489},
  note = {Source identifier: 19660043489}
}