Katherine L. French, Christian Hallmann, Janet M. Hope, Petra L. Schoon, J. Alex Zumberge, Yosuke Hoshino, Carl A. Peters, Simon C. George, Gordon D. Love, Jochen J. Brocks, Roger Buick, Roger E. Summons
Proc Natl Acad Sci U S A. 2015 May 12; 112(19): 5915–5920. Published online 2015 Apr 27. doi: 10.1073/pnas.1419563112