@misc{indiciae6e458b3097fe,
  title = {Ordovician meteoric carbon and oxygen isotopic values: Implications for the latitudinal variations of ancient stable isotopic values},
  author = {K.J. Tobin and D.M. Steinhauff and K.R. Walker},
  year = {1999},
  doi = {10.1016/s0031-0182(98)00221-1},
  url = {https://pubs.usgs.gov/publication/70021486},
  note = {Source identifier: 70021486}
}