David W. Steadman, Richard Franz, Gary S. Morgan, Nancy A. Albury, Brian Kakuk, Kenneth Broad, Shelley E. Franz, Keith Tinker, Michael P. Pateman, Terry A. Lott, David M. Jarzen, David L. Dilcher
Proc Natl Acad Sci U S A. 2007 Dec 11; 104(50): 19897–19902. Published online 2007 Dec 5. doi: 10.1073/pnas.0709572104