@article{COCV_2004__10_1_142_0,
     author = {Pierre, Morgan},
     title = {Newton and conjugate gradient for harmonic maps from the disc into the sphere},
     journal = {ESAIM: Control, Optimisation and Calculus of Variations},
     pages = {142--167},
     publisher = {EDP-Sciences},
     volume = {10},
     number = {1},
     year = {2004},
     doi = {10.1051/cocv:2003040},
     mrnumber = {2084259},
     zbl = {1076.65062},
     language = {en},
     url = {http://archive.numdam.org/articles/10.1051/cocv:2003040/}
}