TY - JOUR T1 - Evidence of deep circulation in two perennially ice-covered Antarctic lakes JF - Limnol. Oceanogr. Y1 - 1998 A1 - Scott W. Tyler A1 - Peter G. Cook A1 - Anya Z. Butt A1 - James M. Thomas A1 - Peter T. Doran A1 - W. Berry Lyons VL - 43 IS - 4 ER -