@misc{indiciaef322cc47c909,
  title = {Retention of lead during oxidative ashing of selected naturally occurring carbonaceous substances},
  author = {F. Cuttitta and J.J. Warr},
  year = {1958},
  doi = {10.1016/0016-7037(58)90027-9},
  url = {https://pubs.usgs.gov/publication/70009832},
  note = {Source identifier: 70009832}
}