BARTH, W.; LARSEN, M. E. On the Homotopy Groups of Complex Projective Algebraic Manifolds. Mathematica Scandinavica, Berkeley, CA, United States, v. 30, p. 88–94, 1972. DOI: 10.7146/math.scand.a-11066. Disponível em: https://journals.msp.org/mscand/article/view/2258. Acesso em: 25 jul. 2026.