Guiry, M. D. in Guiry, M.D. & Guiry, G.M. (2018). AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. http://www.algaebase.org; Accessed on: 04 March 2018.
Dial, R.; Ganey, G.; Skiles, M. (2018). "What color should glacier algae be? An ecological role for red carbon in the cryosphere". FEMS Microbiology Ecology. 94 (3): fiy007. https://academic.oup.com/femsec/article/94/3/fiy007/4810544; Accessed on: 18 December 2018