S.  Kumano, Freshwater Red Algae of the World. Bristol, England: Biopress Limited, 2002.

M. M.  Hall and Vis, M. L., ?Genetic variation in Batrachospermum helminthosum (Rhodophyta) among and within stream reaches using inter-simple sequence repeat (ISSR) molecular markers?, Phycological Research, vol. 50, 2002.