@article {1823,
	title = {Freshwater triclads (Turbellaria) of North America, IX. The genus <i>Sphalloplana</i>},
	journal = {Smithsonian Contributions to Zoology},
	volume = {246},
	year = {1977},
	pages = {1-38},
	url = {https://repository.si.edu/bitstream/handle/10088/5344/SCtZ-0246-Lo_res.pdf?sequence=2},
	author = {Roman Kenk}
}
@article {1793,
	title = {Revised list of the North American freshwater planarians (Platyhelminthes: Tricladida: Paludicola)},
	journal = {Smithsonian Contributions to Zoology},
	year = {1989},
	url = {https://repository.si.edu/bitstream/handle/10088/5289/SCtZ-0476-Hi_res.pdf?sequence=1\&isAllowed=y},
	author = {Roman Kenk}
}
