MILLEMANN, R.E. (1963)
Studies on the taxonomy and life history of echinocephalid worms (Nematoda : Spiruroidea) with a complete description of Echinocephalus pseudouncinatus Millemann, 1951. Journal of Parasitology, 49 (5): 754–764
DOI: 10.2307/3275919
IVAN MERLO-SERNA, A. & GARCIA-PRIETO, L. (2016)
A checklist of helminth parasites of Elasmobranchii in Mexico. Zookey, 563: 73–128
DOI: 10.3897/zookeys.563.6067