@article{AIF_1991__41_2_511_0,
     author = {Ma Li},
     title = {On equivariant harmonic maps defined on a {Lorentz} manifold},
     journal = {Annales de l'Institut Fourier},
     pages = {511--518},
     publisher = {Institut Fourier},
     address = {Grenoble},
     volume = {41},
     number = {2},
     year = {1991},
     doi = {10.5802/aif.1263},
     mrnumber = {92m:58026},
     zbl = {0754.53046},
     language = {en},
     url = {http://archive.numdam.org/articles/10.5802/aif.1263/}
}