↑Moreira D, von der Heyden S, Bass D, López-García P, Chao E, Cavalier-Smith T «Global eukaryote phylogeny: Combined small- and large-subunit ribosomal DNA trees support monophyly of Rhizaria, Retaria and Excavata». Mol. Phylogenet. Evol., 44, 1, juliol 2007, pàg. 255–66. DOI: 10.1016/j.ympev.2006.11.001. PMID: 17174576.