@article{10_4064_cm_26_1_115_122,
     author = {W. Roter},
     title = {On conformally symmetric {2-Ricci-recurrent} spaces},
     journal = {Colloquium Mathematicum},
     pages = {115--122},
     publisher = {mathdoc},
     volume = {26},
     number = {1},
     year = {1972},
     doi = {10.4064/cm-26-1-115-122},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/cm-26-1-115-122/}
}