no. 5
The symmetry of minimizing harmonic maps from a two dimensional domain to the sphere
Annales de l'I.H.P. Analyse non linéaire, Tome 10 (1993) no. 5, pp. 549-559. 
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     author = {Sandier, \'Etienne},
     title = {The symmetry of minimizing harmonic maps from a two dimensional domain to the sphere},
     journal = {Annales de l'I.H.P. Analyse non lin\'eaire},
     pages = {549--559},
     publisher = {Gauthier-Villars},
     volume = {10},
     number = {5},
     year = {1993},
     mrnumber = {1249106},
     zbl = {0797.35027},
     language = {en},
     url = {http://www.numdam.org/item/AIHPC_1993__10_5_549_0/}
}
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Sandier, Étienne. The symmetry of minimizing harmonic maps from a two dimensional domain to the sphere. Annales de l'I.H.P. Analyse non linéaire, Tome 10 (1993) no. 5, pp. 549-559. http://www.numdam.org/item/AIHPC_1993__10_5_549_0/

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[BG] F. Bethuel and J.M. Ghidaglia, Improved Regularity of Elliptic Equations Involving Jacobians and Applications, (to appear). | Zbl

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[JK] W. Jäger and H. Kaul, Uniqueness and Stability of Harmonic Maps and their Jacobi Fields, Manuscripta Math., Vol. 28, 1979, pp. 269-291. | MR | Zbl

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