%0 Journal Article %A Bejan, Cornelia-Livia %A Eken, Şemsi %T A characterization of the Riemann extension in terms of harmonicity %J Czechoslovak Mathematical Journal %D 2017 %P 197-206 %V 67 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.21136/CMJ.2017.0459-15/ %R 10.21136/CMJ.2017.0459-15 %G en %F 10_21136_CMJ_2017_0459_15