%0 Journal Article
%A Masato Tsujii
%T Positive Lyapunov exponents in families of one dimensional dynamical systems.
%J Inventiones mathematicae
%D 1993
%P 113-138
%V 111
%N 1
%I mathdoc
%U http://geodesic.mathdoc.fr/item/IM_1993__111_1_144072/
%F IM_1993__111_1_144072