@article {7691,
	title = {Theoretical morphology of hinge and shell form in Bivalvia: geometric constraints derived from space conflict between umbones},
	journal = {Paleobiology},
	volume = {26},
	number = {4},
	year = {2000},
	note = {PDF},
	pages = {606-624},
	keywords = {bivalvia, constraints, constructional morphology, ligament, mollusca, shell morphology, theoretical morphology},
	author = {Ubukata, Takao}
}
@article {6380,
	title = {The spandrels of San Marco and the Panglossian paradigm: a critique of the adaptationist programme},
	journal = {Proceedings of the Royal Society of London. Series B},
	volume = {205},
	year = {1979},
	note = {PDF},
	pages = {581-598},
	keywords = {adaptation, constraints, development, evolution, pterelectroma, pterelectroma zebra, shell morphology},
	author = {Gould, S. J. and Lewontin, R. C.}
}
@inbook {6217,
	title = {The mechanical constraints in mollusc constructions - the function of the shell, the musculature, and the connective tissue},
	booktitle = {Constructional morphology and evolution},
	year = {1991},
	pages = {359-374},
	publisher = {Springer-Verlag},
	organization = {Springer-Verlag},
	address = {Berlin and Heidelberg},
	keywords = {anatomy, aplacophora, constraints, mollusca, polyplacophora, shell formation, shell morphology},
	author = {Edlinger, Karl},
	editor = {Schmidt-Kittler, N. and Vogel, K.}
}
@inbook {5794,
	title = {Ontogenetic changes reflected in the morphology of the molluscan shell},
	booktitle = {Constructional morphology and evolution},
	year = {1991},
	pages = {211-230},
	publisher = {Springer-Verlag},
	organization = {Springer-Verlag},
	address = {Berlin and Heidelberg},
	keywords = {constraints, microstructure, mollusca, ontogeny, shell formation, shell morphology},
	author = {Bandel, Klaus},
	editor = {Schmidt-Kittler, N. and Vogel, K.}
}
