@article {6382,
	title = {The Etherioidea revisited: a phylogenetic analysis of hyriid relationships (Mollusca: Bivalvia: Paleoheterodonta: Unionoida)},
	journal = {Occasional Papers of the University of Michigan Museum of Zoology},
	volume = {729},
	year = {2000},
	note = {PDF},
	pages = {1-21},
	keywords = {bivalvia, mollusca, morphological characters, phylogeny, taxonomy, unionoida},
	author = {Graf, D. L.}
}
@article {6383,
	title = {Palearctic freshwater mussel (Mollusca: Bivalvia: Unionoida) diversity and the Comparatory Method as a species concept},
	journal = {Proceedings of the Academy of Natural Sciences of Philadelphia},
	volume = {156},
	year = {2007},
	note = {PDF},
	pages = {71-88},
	keywords = {bivalvia, mollusca, morphometrics, species concepts, unionoida},
	author = {Graf, D. L.}
}
@article {6384,
	title = {Palaeoheterodont diversity (Mollusca: Trigonioida+Unionoida): what we know and what we wish we knew about freshwater mussel evolution},
	journal = {Zoological Journal of the Linnean Society},
	volume = {148},
	number = {3},
	year = {2006},
	note = {Hardcopy journal issue},
	pages = {343-394},
	keywords = {bivalvia, molecular characters, mollusca, morphological characters, phylogeny, taxonomy, unionoida},
	author = {Graf, D. L. and Cummings, Kevin S.}
}
