ZVYATKOV, K. A new approach for deriving $c^2$-bounds on the effective conductivity of random dispersions. Ann. Sofia Univ. Fac. Math. and Inf., [S. l.], v. 91, p. 177–192, 1999. Disponível em: https://annual.uni-sofia.bg/index.php/fmi/article/view/277. Acesso em: 22 nov. 2024.