TY - JOUR T1 - UV radiation and potential biological effects beneath the perennial ice cover of an antarctic lake JF - Hydrobiologia Y1 - 2000 A1 - Kepner, R.L. A1 - Robert A. Wharton Jr. A1 - Collier, R A1 - Cockell, C A1 - Jeffrey, W VL - 427 IS - 1 ER -