On the optimal third-order bounds on the effective elastic moduli of random dispersions of spheres. Annual of Sofia University St. Kliment Ohridski. Faculty of Mathematics and Informatics, [S. l.], v. 83, n. 2, p. 37–64, 1992. Disponível em: https://annual.uni-sofia.bg/index.php/fmi/article/view/514. Acesso em: 4 feb. 2026.