KARSTOFT, Henrik. Conformal Imbeddings of the Complex Projective Plane and Self-Dual Connections. MATHEMATICA SCANDINAVICA, [S. l.], v. 70, p. 207–226, 1992. DOI: 10.7146/math.scand.a-12398. Disponível em: https://tidsskrift.dk/math/article/view/12398. Acesso em: 13 aug. 2026.