@article{GDZPPN002231638,
title = {Regularity of weakly harmonic maps from a surface into a manifold with symmetries.},
journal = {Manuscripta mathematica},
volume = {70},
year = {1991},
pages = {203-218},
zbl = {0718.58019},
url = {http://dml.mathdoc.fr/item/GDZPPN002231638}
}
Hélein, Fréderic. Regularity of weakly harmonic maps from a surface into a manifold with symmetries.. Manuscripta mathematica, Tome 70 (1991) pp. 203-218. http://gdmltest.u-ga.fr/item/GDZPPN002231638/