Ware, J. L., Simaika, J. P., & Samways, M. J. (2009). Biogeography and divergence time estimation of the relict Cape dragonfly genus Syncordulia: global significance and implications for conservation. Zootaxa, 2216(1), 22–36. https://doi.org/10.11646/zootaxa.2216.1.2