Project 1133: L. J. Legendre, E. Bourdon, R. P. Scofield, A. J. D. Tennyson, H. Lamrous, A. de Ricqlès, J. Cubo. 2014. Bone histology, phylogeny, and palaeognathous birds (Aves, Palaeognathae). Biological Journal of the Linnean Society. 112 (4):688–700.