HARRISON, John. A formalized proof of Dirichlet’s theorem on primes in arithmetic progression. Journal of Formalized Reasoning, [S. l.], v. 2, n. 1, p. 63–83, 2009. DOI: 10.6092/issn.1972-5787/1558. Disponível em: https://jfr.unibo.it/article/view/1558. Acesso em: 3 dec. 2024.