TY - JOUR TI - Explosive eruption of coal and basalt and the end-Permian mass extinction U1 - Essential JF - Proceedings of the National Academy of Sciences of the United States of America AU - Darcy E. Ogden and Norman H. Sleep PB - National Academy of Sciences UR - https://www.jstor.org/stable/23076231?seq=1#metadata_info_tab_contents PY - 2012 SP - 59 IS - 1 VL - 109 ER -