%0 Journal Article %A S. M. Natanzon %T Formal series for the $\tau$-function realizing Riemann's theorem about domains in the complex plane %J Trudy Matematicheskogo Instituta imeni V.A. Steklova %D 2001 %P 760-761 %V 56 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/RM_2001_56_4_a13/ %G en %F RM_2001_56_4_a13