%0 Journal Article
%A F. Gesztesy
%A K. A. Makarov
%T $\mathrm{SL}_2(\mathbb R)$, exponential Herglotz representations, and spectral averaging
%J Algebra i analiz
%D 2003
%P 104-144
%V 15
%N 3
%I mathdoc
%U http://geodesic.mathdoc.fr/item/AA_2003_15_3_a2/
%G ru
%F AA_2003_15_3_a2