@misc{indiciae736d349dcee2,
  title = {Noble gases, stable isotopes, and radiocarbon as tracers of flow in the Dakota aquifer, Colorado and Kansas},
  author = {J.F. Clark and M.L. Davisson and G.B. Hudson and P. A. Macfarlane},
  year = {1998},
  doi = {10.1016/s0022-1694(98)00233-9},
  url = {https://pubs.usgs.gov/publication/70020607},
  note = {Source identifier: 70020607}
}