@article {439,
	title = {Freshwater triclads (Turbellaria) of North America. VIII. <i>Dugesia arizonensis</i>, new species},
	journal = {Proceedings of The Biological Society of Washington},
	volume = {88},
	year = {1975},
	pages = {113-120},
	chapter = {113},
	author = {Roman Kenk}
}
@article {316,
	title = {Reconsiderations of the species status of some South American Planarians (Platyhelminthes: Tricladida: Paludicola)},
	journal = {Proceedings of the Biological Society of Washington},
	volume = {109},
	number = {2},
	year = {1996},
	month = {06/1996},
	pages = {229-235},
	url = {http://www.biodiversitylibrary.org/page/34644834/$\#$page/251/mode/1up},
	author = {Ronald Sluys}
}
