Haworth, E.Y., Atkinson, K.M. & P.S. Newell (1988). Distribution of certain diatom taxa in the waterbodies of Cumbria, U.K. In: F.E. Round (ed.), Proceedings of the Ninth International Diatom Symposium, Bristol, August 24-30, 1986. Biopress Ltd., Bristol, and Koeltz Scientific Books, Koenigstein, 17-28