%0 Journal Article %A Stanisław Ewert-Krzemieniewski %T On conformally birecurrent Ricci-recurrent manifolds %J Colloquium Mathematicum %D 1991 %P 299-312 %V 62 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/cm-62-2-299-312/ %R 10.4064/cm-62-2-299-312 %G en %F 10_4064_cm_62_2_299_312