no. 2
The Dirichlet problem for harmonic maps from the disk into the euclidean n-sphere
Annales de l'I.H.P. Analyse non linéaire, Tome 2 (1985) no. 2, pp. 119-141. 
@article{AIHPC_1985__2_2_119_0,
     author = {Benci, V. and Coron, J. M.},
     title = {The {Dirichlet} problem for harmonic maps from the disk into the euclidean n-sphere},
     journal = {Annales de l'I.H.P. Analyse non lin\'eaire},
     pages = {119--141},
     publisher = {Gauthier-Villars},
     volume = {2},
     number = {2},
     year = {1985},
     mrnumber = {794003},
     zbl = {0597.35022},
     language = {en},
     url = {http://www.numdam.org/item/AIHPC_1985__2_2_119_0/}
}
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Benci, V.; Coron, J. M. The Dirichlet problem for harmonic maps from the disk into the euclidean n-sphere. Annales de l'I.H.P. Analyse non linéaire, Tome 2 (1985) no. 2, pp. 119-141. http://www.numdam.org/item/AIHPC_1985__2_2_119_0/

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