Yingbo Han and Shuxiang Feng. (2012). Complete Hypersurfaces with Constant Scalar Curvature in a Special Kind of Locally Symmetric Manifold.
            <i>Analysis in Theory and Applications</i>. <i>28</i> (2).
            189-200.
         doi:10.3969/j.issn.1672-4070.2012.02.009