@misc{indiciae64ea866bffad,
  title = {Atomic weights of the elements 1999},
  author = {T.B. Coplen},
  year = {2001},
  doi = {10.1063/1.1395055},
  url = {https://pubs.usgs.gov/publication/70023988},
  note = {Source identifier: 70023988}
}