@article {1849,
	title = {North American triclad Turbellaria. 16. Fresh-water planarians from the vicinity of Portland, Oregon},
	journal = {American Museum Novitates},
	year = {1963},
	pages = {1-5},
	url = {http://digitallibrary.amnh.org/handle/2246/3378},
	author = {Libbie H. Hyman}
}
@article {1808,
	title = {Studies on the morphology, taxonomy, and distribution of North American triclad Turbellaria. VI. A new Dendrocoelid from Montana, <i>Dendrocoelopsia vaginatus</i> n. sp.},
	journal = {Transactions of the American Microscopical Society },
	volume = {54},
	year = {1935},
	pages = {338-345},
	author = {Libbie H. Hyman}
}
@book {1749,
	title = {Freshwater planarians (Turbellaria) of North America},
	series = {Biota of freshwater ecosystems identification manual no. 1.},
	year = {1972},
	publisher = {Washington, U.S. Environmental Protection Agency},
	organization = {Washington, U.S. Environmental Protection Agency},
	address = {Washington, D.C.},
	doi = {http://dx.doi.org/10.5962/bhl.title.4020},
	url = {http://www.biodiversitylibrary.org/bibliography/4020$\#$/summary},
	author = {Roman Kenk}
}
