Mysterious abrupt carbon-14 increase in coral contributed by a comet

by Liu, Yi, Zhang, Zhao-feng, Peng, Zi-cheng, Ling, Ming-xing, Shen, Chuan-Chou, Liu, Wei-guo, Sun, Xiao-chun, Shen, Cheng-de, Liu, Ke-xin, Sun, Weidong
Published 2014