CHERN, Shiing-shen. On the projective structure of a real hypersurface in $\mathsf{C}_{n+1}$. Mathematica Scandinavica, Berkeley, CA, United States, v. 36, p. 74–82, 1975. DOI: 10.7146/math.scand.a-11563. Disponível em: https://journals.msp.org/mscand/article/view/2054. Acesso em: 25 jul. 2026.