@article{MM2_1997__93_4_156285,
     author = {Miguel Ortega and Juan de Dios P\'erez},
     title = {On the {Ricci} {Tensor} of a real hypersurface of quaternionic hyperbolic space.},
     journal = {Manuscripta mathematica},
     pages = {49--58},
     publisher = {mathdoc},
     volume = {93},
     number = {4},
     year = {1997},
     zbl = {0879.53015},
     url = {http://geodesic.mathdoc.fr/item/MM2_1997__93_4_156285/}
}