@article{10_4064_cm_33_2_225_235,
     author = {W. Roter},
     title = {Conformally symmetric spaces admitting special quadratic first integrals},
     journal = {Colloquium Mathematicum},
     pages = {225--235},
     publisher = {mathdoc},
     volume = {33},
     number = {2},
     year = {1975},
     doi = {10.4064/cm-33-2-225-235},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/cm-33-2-225-235/}
}