@article{MM2_1988__60_2_155280,
     author = {Fr\'ed\'eric Helein},
     title = {Regularity and uniqueness of harmonic maps into and ellipsoid.},
     journal = {Manuscripta mathematica},
     pages = {235--258},
     publisher = {mathdoc},
     volume = {60},
     number = {2},
     year = {1988},
     zbl = {0646.58020},
     url = {http://geodesic.mathdoc.fr/item/MM2_1988__60_2_155280/}
}