Ryan, K.G. (1992). Ultraviolet radiation and photosynthetic production in Antarctic sea ice algae. J Photochem. Photobiol., B Biology, 13, 235-240.
Ryan, K.G. and Beaglehole D, (1994) Ultraviolet radiation and bottom-ice algae: Laboratory and field studies from McMurdo Sound, Antarctica. Antarctic Research Series 62, 229-242.
Ryan, K.G. Exley, R.R. 1991 The effects of ultraviolet radiation on Antarctic sea ice algae. Journal of phycology 27: 64