RUCHIN, A. On Poisson law on groups. Lithuanian Mathematical Journal, [S. l.], v. 10, n. 3, p. 537–543, 1970. DOI: 10.15388/LMJ.1970.20904. Disponível em: https://www.zurnalai.vu.lt/LMJ/article/view/20904. Acesso em: 2 jul. 2025.