Fiona S.L. Brinkman, Jeffrey L. Blanchard, Artem Cherkasov, Yossef Av-Gay,
Robert C. Brunham, Rachel C. Fernandez, B. Brett Finlay, Sarah P. Otto, B.F.
Francis Ouellette, Patrick J. Keeling, Ann M. Rose, Robert E.W. Hancock, and
Steven J.M. Jones
Evidence That Plant-Like Genes in Chlamydia Species Reflect
an Ancestral Relationship between Chlamydiaceae, Cyanobacteria, and the
Chloroplast
Genome Research August 2002, Volume 12, Issue 8 pp. 1159-1167.