@misc{indiciae5a355b0a0043,
  title = {Another look at the calculation of fallout tephra volumes},
  author = {J. Fierstein and M. Nathenson},
  year = {1992},
  doi = {10.1007/bf00278005},
  url = {https://pubs.usgs.gov/publication/70017275},
  note = {Source identifier: 70017275}
}