Chapman, M. A., Tang, S., Draeger, D., Nambeesan, S., Shaffer, H., Barb, J. G., . . . Burke, J. M. (2012). Genetic Analysis of Floral Symmetry in Van Gogh's Sunflowers Reveals Independent Recruitment of CYCLOIDEA Genes in the Asteraceae. Public Library of Science.

Chapman, Mark A., Shunxue Tang, Dörthe Draeger, Savithri Nambeesan, Hunter Shaffer, Jessica G. Barb, Steven J. Knapp, a John M. Burke. Genetic Analysis of Floral Symmetry in Van Gogh's Sunflowers Reveals Independent Recruitment of CYCLOIDEA Genes in the Asteraceae. Public Library of Science, 2012.

Chapman, Mark A., et al. Genetic Analysis of Floral Symmetry in Van Gogh's Sunflowers Reveals Independent Recruitment of CYCLOIDEA Genes in the Asteraceae. Public Library of Science, 2012.