@article {Castillo-FernandezLambshead1990,
	title = {Revision of the genus \emph{Elzalia} {Gerlach}, 1957 ({Nematoda: Xyalidae}) including three new species from an oil producing zone in the {Gulf of Mexico}, with a discussion of the sibling species problem},
	journal = {Bulletin of the British Museum of Natural History},
	volume = {56},
	year = {1990},
	pages = {63{\textendash}71},
	author = {Castillo-Fernandez, D. and Lambshead, P. J. D.}
}
