1. G. Polya and G. Szego, Isoperimetric Inequalities in Mathematical Physics [Russian translation], Moscow (1962).
2. Ya. S. Soibelman, “The asymptotics of the capacity of a condenser with plates of arbitrary shape,” Sib. Mat. Zh., 25, No.6, 167–181 (1984).
3. R. Kuhnau, “Randeffekte beim elektrostatischen Kondensator,” Zap. Nauchn. Semin. POMI, 254, 132–144 (1998).
4. L. V. Ahlfors and A. Beurling, “Conformal invariants and function-theoretic nullsets,” Acta. Math., 83, No.1/2, 101–129 (1950).
5. V. K. Heyman, Multivalent Functions [Russian translation], Moscow (1960).