Sørensen, M.V. et al. 2020. Description, redescription and revision of sixteen putatively closely related species of Echinoderes (Kinorhyncha: Cyclorhagida), with the proposition of a new species group – the Echinoderes dujardinii group. European Journal of Taxonomy. 730, 1 (Dec. 2020), 1–101. DOI:https://doi.org/10.5852/ejt.2020.730.1197.