Phylogeny and biogeography of the Ergasilidae (Copepoda, Poecilostomatoida), with reconsideration of the taxonomic status of the Vaigamidae. - Amado, M.A.P.M., J.S. Ho & C.E.F. Rocha (Contributions to Zoology, 1995)
Available in Wilson Copepod Library (non-digital)