@misc{indiciaee922ef9a5ab1,
  title = {Evidence for deposition of 10 million tonnes of impact spherules across four continents 12,800 y ago},
  author = {James H. Wittke and James C. Weaver and Ted E. Bunch and James P. Kennett and Douglas J. Kennett and Andrew Moore and Gordon C. Hillman and Kenneth B. Tankersly and Albert C. Goodyear and Christopher R. Moore and I. Randolph Daniel and Jack H. Ray and Neal H. Lopinot and David Ferraro and Isabel Israde-Alcantara and James L. Bischoff and Paul S. DeCarli and Robert E. Hermes and Johan B. Kloosterman and Zsolt Revay and George A. Howard and David R. Kimbel and Gunther Kletetschka and Ladislav Nabelek and Carl P. Lipo and Sachiko Sakai and Allen West and Richard B. Firestone},
  year = {2013},
  url = {https://pubs.usgs.gov/publication/70118105},
  note = {Source identifier: 70118105}
}