@article {688,
	title = {Sipunculid burrows in coral reefs: evidence for chemical and mechanical excavation},
	journal = {Pacific Science},
	volume = {28},
	number = {4},
	year = {1974},
	note = {@ CRYSTALINE STRUCTURE OF SIP BURROW LININGS FROM DEAD CORAL (SEM STUDIES) SHOWS ETCHINGS SIMILAR TO THAT MADE BY TREATMENT OF UNMODIFIED CORAL W ACID, AND WITH EDTA. BIOCHEM ACTIV SEEMS TO WEAKEN INTERCRYSTALINE BONDS PERMITING DETACHMENT OF CRYSTALS BY MECHANICAL ABRASION AND SUBSEQUENT DEPOSITION OF THEIR FRAGMENTS IN SPACES BETWEEN CORALLINE WALLS.},
	pages = {357-359},
	keywords = {CORAL BIOEROSION},
	author = {Williams, J. A. and Margolis, S. V.}
}
@article {686,
	title = {Development of a rock burrowing sipunculid inhabiting stony coral},
	journal = {American Zoologist},
	volume = {12},
	number = {4},
	year = {1972},
	pages = {723},
	keywords = {CORAL BIOEROSION, development},
	author = {Williams, J. A.}
}
