@misc{indiciaeccae7433f6c9,
  title = {PAH refractory index as a source discriminant of hydrocarbon input from crude oil and coal in Prince William Sound, Alaska},
  author = {F. D. Hostettler and R.J. Rosenbauer and K.A. Kvenvolden},
  year = {1999},
  doi = {10.1016/s0146-6380(99)00071-6},
  url = {https://pubs.usgs.gov/publication/70021893},
  note = {Source identifier: 70021893}
}