@article{10_21136_CMJ_1995_128512,
     author = {Cordero, Luis A. and Parker, Phillip E.},
     title = {Examples of sectional curvature with prescribed symmetry on $3$-manifolds},
     journal = {Czechoslovak Mathematical Journal},
     pages = {7--20},
     publisher = {mathdoc},
     volume = {45},
     number = {1},
     year = {1995},
     doi = {10.21136/CMJ.1995.128512},
     mrnumber = {1314528},
     zbl = {0835.53079},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.21136/CMJ.1995.128512/}
}