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Dedicated to the memory of Professor Zeev Nehari
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Hersch, J. On the torsion function, Green's function and conformal radius: An isoperimetric inequality of Pólya and Szegö, some extensions and applications. J. Anal. Math. 36, 102–117 (1979). https://doi.org/10.1007/BF02798771
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DOI: https://doi.org/10.1007/BF02798771