@misc{indiciae579b174f564b,
  title = {The transboundary non-renewable Nubian Aquifer System of Chad, Egypt, Libya and Sudan: Classical groundwater questions and parsimonious hydrogeologic analysis and modeling},
  author = {Clifford I. Voss and Safaa M. Soliman},
  year = {2013},
  doi = {10.1007/s10040-013-1039-3},
  url = {https://pubs.usgs.gov/publication/70046429},
  note = {Source identifier: 70046429}
}