Gai, Y., Song, D., Sun, H., Yang, Q., Zhou, K. (2008): The complete mitochondrial genome of Symphylella sp. (Myriapoda: Symphyla): Extensive gene order rearrangement and evidence in favor of Progoneata. Mol Phylogenet Evol, 49: 574-85.
Gai, Y.-H., Song, D.-X., Sun, H.-Y., Zhou, K.-Y. (2006):Myriapod monophyly and relationships among myriapod classes based on nearly complete 28S and 18S rDNA sequences. Zoological Science, 23: 1101-1108.