Stepanek, Joshua G, and J Patrick Kociolek. 2015. “Three New Species of the Diatom Genus Halamphora (Bacillariophyta) from the Prairie Pothole Lakes Region of North Dakota, USA”. Phytotaxa 197 (1). Auckland, New Zealand:27–36. https://doi.org/10.11646/phytotaxa.197.1.3.