M. G. Leakey, F. Spoor, M. C. Dean, C. S. Feibel, S. C. Ant\'on, C. Kiarie, and L. N. Leakey. New fossils from Koobi Fora in northern Kenya confirm taxonomic diversity in early Homo. Nature, volume 488, issue 7410, pages 201-204, August 2012.

F. Spoor, M. G. Leakey, P. N. Gathogo, F. H. Brown, S. C. Anton, I. McDougall, C. Kiarie, F. K. Manthi, and L. N. Leakey. Implications of new early Homo fossils from Ileret, east of Lake Turkana, Kenya. Nature, Springer Science and Business Media LLC, volume 448, issue 7154, pages 688-691, August 2007.

M. G. Leakey, F. Spoor, F. H. Brown, P. N. Gathogo, C. Kiarie, L. N. Leakey, and I. McDougall. New hominin genus from eastern Africa shows diverse Middle Pliocene lineages. Nature, volume 410, issue 6827, pages 433-440, March 2001.