%0 Journal Article
%A Isaac Kornfeld
%A Wojciech Kosek
%T Positive $L^1$ operators associated with
 nonsingular mappings and an example of E. Hille
%J Colloquium Mathematicum
%D 2003
%P 63-77
%V 98
%N 1
%I mathdoc
%U http://geodesic.mathdoc.fr/articles/10.4064/cm98-1-5/
%R 10.4064/cm98-1-5
%G en
%F 10_4064_cm98_1_5