@article{MM2_1985__53_155098,
     author = {Atsushi Tachikawa},
     title = {Rotationally {Symmetric} {Harmonic} {Maps} from a {Ball} into a {Warped} {Product} {Manifold.}},
     journal = {Manuscripta mathematica},
     pages = {235--254},
     publisher = {mathdoc},
     volume = {53},
     year = {1985},
     zbl = {0578.58008},
     url = {http://geodesic.mathdoc.fr/item/MM2_1985__53_155098/}
}