@article{10_21136_CMJ_2017_0459_15,
     author = {Bejan, Cornelia-Livia and Eken, \c{S}emsi},
     title = {A characterization of the {Riemann} extension in terms of harmonicity},
     journal = {Czechoslovak Mathematical Journal},
     pages = {197--206},
     publisher = {mathdoc},
     volume = {67},
     number = {1},
     year = {2017},
     doi = {10.21136/CMJ.2017.0459-15},
     mrnumber = {3633006},
     zbl = {06738512},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.21136/CMJ.2017.0459-15/}
}