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