LEE, H.; PAK, E.; SUH, Y. J. Hopf Hypersurfaces in Complex Two-Plane Grassmannians With $\mathfrak{D}$-Parallel Shape Operator. MATHEMATICA SCANDINAVICA, [S. l.], v. 117, n. 2, p. 217–230, 2015. DOI: 10.7146/math.scand.a-22868. Disponível em: https://www.mscand.dk/article/view/22868. Acesso em: 28 mar. 2024.