Bahls, L., J. Pierce, R. Apfelbeck, and L. Olsen. “Encyonema Droseraphilum Sp. nov. (Bacillariophyta) and Other Rare Diatoms from Undisturbed Floating-Mat Fens in the Northern Rocky Mountains, USA”. Phytotaxa, vol. 127, no. 1, Aug. 2013, pp. 32–48, doi:10.11646/phytotaxa.127.1.7.