@misc{indiciaefeb156427748,
  title = {A comparative study of modern and fossil cone scales and seeds of conifers: A geochemical approach},
  author = {Stankiewicz B. Artur and Maria Mastalerz and M.A. Kruge and P. F. Van Bergen and A. Sadowska},
  year = {2008},
  doi = {10.1046/j.1469-8137.1997.00638.x},
  url = {https://pubs.usgs.gov/publication/70019402},
  note = {Source identifier: 70019402}
}