@misc{indiciae0ea2029e4f54,
  title = {Permafrost features on the Martian surface.},
  author = {Negus De Wys, J. and Wade, F. A.},
  year = {1968},
  url = {https://ntrs.nasa.gov/citations/19680055347},
  note = {Source identifier: 19680055347}
}