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@article{MM2_1991__70_1_155582, author = {Fr\'ederic H\'elein}, title = {Regularity of weakly harmonic maps from a surface into a manifold with symmetries.}, journal = {Manuscripta mathematica}, pages = {203--218}, publisher = {mathdoc}, volume = {70}, number = {1}, year = {1991}, zbl = {0718.58019}, url = {http://geodesic.mathdoc.fr/item/MM2_1991__70_1_155582/} }
Fréderic Hélein. Regularity of weakly harmonic maps from a surface into a manifold with symmetries.. Manuscripta mathematica, Tome 70 (1991) no. 1, pp. 203-218. http://geodesic.mathdoc.fr/item/MM2_1991__70_1_155582/