LAWSON, H. B. J. The stable homology of flat torus. MATHEMATICA SCANDINAVICA, [S. l.], v. 36, p. 49–73, 1975. DOI: 10.7146/math.scand.a-11562. Disponível em: https://www.mscand.dk/article/view/11562. Acesso em: 4 may. 2024.