MEIJER, H. G. Sets of Primes with Intermediate Density. Mathematica Scandinavica, Berkeley, CA, United States, v. 34, p. 37–43, 1974. DOI: 10.7146/math.scand.a-11502. Disponível em: https://journals.msp.org/mscand/article/view/2143. Acesso em: 25 jul. 2026.