Fowler GM, Stobo WT. Patterns of abundance and maturity among three species of parasitic nematodes (Pseudoterranova decipiens, Contracaecum osculatum, Anisakis simplex) co-existing in Sable Island grey seals (Halichoerus grypus). NAMMCOSP. 2001;3:149-160. doi:10.7557/3.2964