Hoberg, E.P. & Brooks, D.R. & Molina-Ureña, H. & Erbe, E. (1998)
Echinocephalus janzeni n. sp. (Nematoda: Gnathostomatidae) in Himantura pacifica (Chondrichthyes: Myliobatiformes) from the Pacific coast of Costa Rica and Mexico, with historical biogeographic analysis of the genus. Journal of Parasitology, 84(3), 571–581

Adams, A.M. & Hoberg, E.P. & Mcalpine, D.F. & Clayden, S.L. (1998)
Occurrence and morphological comparisons of Campula oblonga (Digenea: Campulidae), including a report from an atypical host, the thresher shark, Alopias vulpinus. Journal of Parasitology, 84(2), 435–438

Brooks, D.R. & Hoberg, E.P. & Weekes, P.J. (1991)
Preliminary Phylogenetic Systematic Analysis Of The Major Lineages Of The Eucestoda (Platyhelminthes, Cercomeria). Proceedings of the Biological Society of Washington, 104(4), 651–668