@misc{indiciae835052e605db,
  title = {Geopotential Field Anomaly Continuation with Multi-Altitude Observations},
  author = {Kim, Jeong Woo and Kim, Hyung Rae and vonFrese, Ralph and Taylor, Patrick and Rangelova, Elena},
  year = {2011},
  url = {https://ntrs.nasa.gov/citations/20110015532},
  note = {Source identifier: 20110015532}
}