@misc{indiciae17feb30e95d5,
  title = {Morphology of Mars North Polar Ice Cap},
  author = {Zwally, H. J. and Fountain, A. and Kargel, J. and Kouvaris, L. and Lewis, K. and MacAyeal, D. and Pfeffer, T. and Saba, J. L.},
  year = {2000},
  url = {https://ntrs.nasa.gov/citations/20010002521},
  note = {Source identifier: 20010002521}
}