@article{GDZPPN002233819,
title = {Multiple solutions of the Dirichlet problem for harmonic maps from discs into 2-spheres.},
journal = {Manuscripta mathematica},
volume = {76},
year = {1992},
pages = {435-446},
zbl = {0788.58018},
url = {http://dml.mathdoc.fr/item/GDZPPN002233819}
}
Qing, Jie. Multiple solutions of the Dirichlet problem for harmonic maps from discs into 2-spheres.. Manuscripta mathematica, Tome 76 (1992) pp. 435-446. http://gdmltest.u-ga.fr/item/GDZPPN002233819/