@article{01123901,
title = {Normal flows and harmonic manifolds.},
journal = {Publications de l'Institut Math\'ematique. Nouvelle S\'erie},
volume = {61(75)},
year = {1997},
pages = {105-113},
zbl = {0885.53049},
language = {en},
url = {http://dml.mathdoc.fr/item/01123901}
}
González-Dávila, J.C.; Vanhecke, Lieven. Normal flows and harmonic manifolds.. Publications de l'Institut Mathématique. Nouvelle Série, Tome 61(75) (1997) pp. 105-113. http://gdmltest.u-ga.fr/item/01123901/