@article {Southward1981,
	title = {{Bacterial symbionts and low 13C/12C ratios in tissues of Pogonophora indicate unusual nutrition and metabolism}},
	journal = {Nature},
	volume = {293},
	number = {5834},
	year = {1981},
	pages = {616{\textendash}620},
	issn = {0028-0836},
	doi = {10.1038/293616a0},
	url = {http://dx.doi.org/10.1038/293616a0},
	author = {Southward, A J and Southward, E C and Dando, P R and Rau, G H and Felbeck, H and Fl{\"u}gel, H}
}
