MARKOV, K. On the "triangular" inequality in the theory of two-phase random media. Ann. Sofia Univ. Fac. Math. and Inf., [S. l.], v. 89, p. 159–166, 1997. Disponível em: https://ftl5.uni-sofia.bg./index.php/fmi/article/view/364. Acesso em: 24 nov. 2024.