%0 Journal Article %A Steven P. Kerckhoff %A W.P. Thurston %T Non-continuity of the action of the modular group at Ber's boundary of Teichmuller space. %J Inventiones mathematicae %D 1990 %P 25-48 %V 100 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/IM_1990__100_2_143777/ %F IM_1990__100_2_143777