Fowler, G.M. and Stobo, W.T. 2001. Patterns of abundance and maturity among three species of parasitic nematodes (<i>Pseudoterranova decipiens</i>, <i>Contracaecum osculatum</i>, <i>Anisakis simplex</i>) co-existing in Sable Island grey seals (<i>Halichoerus grypus</i>). NAMMCO Scientific Publications. 3, (Nov. 2001), 149–160. DOI:https://doi.org/10.7557/3.2964.