%0 Journal Article
%A Marek Bożejko
%T Positive-definite kernels, length functions on groups and a noncommutative von Neumann inequality
%J Studia Mathematica
%D 1989
%P 107-118
%V 95
%N 2
%I mathdoc
%U http://geodesic.mathdoc.fr/articles/10.4064/sm-95-2-107-118/
%R 10.4064/sm-95-2-107-118
%G en
%F 10_4064_sm_95_2_107_118