@article{1cac4547b22649c39f56ba8795b8fe4e,
title = "Inconsistent redefining of the carbon spherule {"}impact{"} proxy",
author = "Mark Hardiman and Scott, \{Andrew C.\} and Collinson, \{Margaret E.\} and Anderson, \{R. Scott\}",
year = "2012",
month = aug,
day = "21",
doi = "10.1073/pnas.1206108109",
language = "English (US)",
volume = "109",
pages = "E2244",
journal = "Proceedings of the National Academy of Sciences of the United States of America",
issn = "0027-8424",
publisher = "National Academy of Sciences",
number = "34",
}