additional sourceKnight-Jones, Phyllis. (1984). A new species of Protoleodora (Spirorbidae: Polychaeta) from eastern U.S.S.R., with a brief revision of related genera. <em>Zoological Journal of the Linnean Society, London.</em> 80(2-3): 109-120., available online athttps://academic.oup.com/zoolinnean/article-abstract/80/2-3/109/2703213[details]