MARKOV, K. On the two-point correlation functions in random arrays of nonoverlapping spheres. Ann. Sofia Univ. Fac. Math. and Inf., [S. l.], v. 91, p. 151–175, 1999. Disponível em: https://stipendii.uni-sofia.bg/index.php/fmi/article/view/276. Acesso em: 4 dec. 2024.