@article {7775,
	title = {Morphology, morphoclines and a new classification of the Pteriomorphia (Mollusca: Bivalvia)},
	journal = {Philosophical Transactions of the Royal Society of London, Series B},
	volume = {284},
	year = {1978},
	note = {PDF},
	pages = {345-365},
	author = {Waller, T. R.}
}
@article {7780,
	title = {The evolution of ligament systems in the Bivalvia},
	journal = {American Malacological Bulletin},
	volume = {4},
	number = {1},
	year = {1986},
	month = {February},
	pages = {111-112},
	keywords = {bivalvia, ligament, microstructure, mollusca},
	author = {Waller, T. R.}
}
@article {1672,
	title = {Morphology, morphoclines and a new classification of the Pteriomorphia (Mollusca: Bivalvia)},
	journal = {Philosophical Transactions of the Royal Society of London, Series B},
	volume = {284},
	year = {1978},
	pages = {345-365},
	author = {Waller, T. R.}
}
