@article {6872,
	title = {Skeletal matrices, muci, and the origin of invertebrate calcification},
	journal = {Proceedings of the National Academy of Sciences of the United States of America},
	volume = {93},
	year = {1996},
	month = {February},
	pages = {1554-1559},
	keywords = {bivalvia, calcification, evolution, invertebrates, mollusca},
	author = {Marin, Fr{\'e}d{\'e}ric and Smith, Mark and Isa, Yeishin and Muyzer, Gerard and Westbroek, Peter}
}
@article {1367,
	title = {Skeletal matrices, muci, and the origin of invertebrate calcification},
	journal = {Proceedings of the National Academy of Sciences of the United States of America},
	volume = {93},
	year = {1996},
	pages = {1554-1559},
	keywords = {bivalvia, calcification, evolution, invertebrates, mollusca},
	author = {Marin, Fr{\'e}d{\'e}ric and Smith, Mark and Isa, Yeishin and Muyzer, Gerard and Westbroek, Peter}
}
