@article{RM_2001_56_4_a13,
     author = {S. M. Natanzon},
     title = {Formal series for the $\tau$-function realizing {Riemann's} theorem about domains in the complex plane},
     journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova},
     pages = {760--761},
     publisher = {mathdoc},
     volume = {56},
     number = {4},
     year = {2001},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/RM_2001_56_4_a13/}
}