@article {7917,
	title = {Systematic comparison and reconstruction of sea urchin (Echinoidea) internal anatomy: a novel approach using magnetic resonance imaging},
	journal = {BMC Biology },
	volume = {6},
	year = {2008},
	note = {PDF},
	pages = {33},
	keywords = {imaging, morphological characters, sea urchins},
	author = {Ziegler, Alexander and Faber, Cornelius and Mueller, Susanne and Bartolomaeus, Thomas}
}
