WANG, Wenjie. Recurrent Hopf hypersurfaces in complex 2-plane Grassmannians. Italian Journal of Pure and Applied Mathematics, [S. l.], v. 53, p. 237–247, 2025. Disponível em: https://journals.uniurb.it/index.php/ijpam/article/view/5661. Acesso em: 24 apr. 2026.