@article {Zhang2001_561,
	title = {Ultrastructure of the postcorpus of the esophagus of \emph{Teratocephalus} \emph{lirellus} ({Teratocephalida}) and its use for interpreting character evolution in {Secernentea} ({Nematoda})},
	journal = {Canadian Journal of Zoology},
	volume = {79},
	number = {1},
	year = {2001},
	pages = {16{\textendash}25},
	author = {Zhang, Y.C. and Baldwin, J.G.}
}
