@misc{indiciae704617502513,
  title = {Time-dependence of sea-ice concentration and multiyear ice fraction in the Arctic Basin},
  author = {P. Gloersen and H.J. Zwally and A.T.C. Chang and D.K. Hall and W. J. Campbell and R.O. Ramseier},
  year = {1978},
  doi = {10.1007/bf00913881},
  url = {https://pubs.usgs.gov/publication/70012715},
  note = {Source identifier: 70012715}
}