@article{AFST_1997_6_6_2_187_0,
     author = {Carneiro de Almeida, Sebasti\~ao and Gustavo Braga Brito, Fabiano},
     title = {Closed hypersurfaces of $S^4$ with two constant symmetric curvatures},
     journal = {Annales de la Facult\'e des sciences de Toulouse : Math\'ematiques},
     pages = {187--202},
     publisher = {Universit\'e Paul Sabatier. Facult\'e des sciences},
     address = {Toulouse},
     volume = {Ser. 6, 6},
     number = {2},
     year = {1997},
     mrnumber = {1611812},
     zbl = {0905.53041},
     language = {en},
     url = {http://www.numdam.org/item/AFST_1997_6_6_2_187_0/}
}