@article {695,
	title = {Sipunculans and Echiurans of Isla de Coco (Cocos Island), Costa Rica},
	journal = {Zootaxa},
	volume = {2557},
	year = {2010},
	pages = {60-68},
	author = {Dean, H. K. and Sibaja-Cordero, J. A. and Cort{\'e}s, J. and Varga, R. and Kawauchi, G. Y.}
}
@article {211,
	title = {Range extension of Nephasoma pellucidum and new records of Apionsoma (Edmondsius) pectinatum (Sipuncula) and Thalassema _________________________________ __________ steinbecki (Echiura) from the Pacific of Costa Rica __________},
	journal = {Rev. Biol. Trop.},
	volume = {46},
	number = {6},
	year = {1998},
	pages = {279-280},
	author = {Dean, H. K. and Cutler, E. B.}
}
@article {195,
	title = {Taxonomic Review of three species of Sipuncula (Golfingiidae, Phascolosomatidae, Themistidae) from the Eastern (sic) Pacific Ocean},
	journal = {Publ. Seto Mar. Biol. Lab.},
	volume = {38},
	number = {1/2},
	year = {1997},
	pages = {37-43},
	author = {Cutler, E. B. and Dean, H. K.}
}
@article {651,
	title = {Lista preliminar de invertebrados asociados a las sedimentos del Gulfo de Nicoya, Costa Rica},
	journal = {Brenesia},
	volume = {24},
	year = {1985},
	pages = {327 -342},
	author = {Vargas, J. A. and Dean, H. K. and Maurer, D. and Orellana, P.}
}
