METSÄNKYLÄ, T. On the cyclotomic invariants of Iwasawa. MATHEMATICA SCANDINAVICA, [S. l.], v. 37, p. 61–75, 1975. DOI: 10.7146/math.scand.a-11588. Disponível em: https://www.mscand.dk/article/view/11588. Acesso em: 2 may. 2024.