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2. Barrett, P. R. F. & J. R. Newman, 1992. Control of algae. Progress Report, Aquatic Weeds Research Unit, Broadmoor Lane, Sonning, Reading, RG4 0TH. U.K.
3. Barrett, P. R. F., J. C. Curnow & J. W. Littlejohn, 1996. The control of diatom and cyanobacterial blooms in reservoirs using barley straw. Hydrobiologia 340: 307–311.
4. Everall, N. C. & D. R. Lees, 1996. The use of barley straw to control general and blue-green algal growth in a Derbyshire reservoir. Wat. Res. 30: 269–276.
5. Gibson, M. T. & P. R. F. Barrett, 1989. Terbutryn resistance in Vaucheria dichotoma. J. Appl. Phycol. 1: 167–170.