@article{AIHPC_1999__16_4_411_0,
     author = {Zhou, Yi},
     title = {Global weak solutions for $1+2$ dimensional wave maps into homogeneous spaces},
     journal = {Annales de l'I.H.P. Analyse non lin\'eaire},
     pages = {411--422},
     publisher = {Gauthier-Villars},
     volume = {16},
     number = {4},
     year = {1999},
     mrnumber = {1697560},
     zbl = {0997.58012},
     language = {en},
     url = {http://www.numdam.org/item/AIHPC_1999__16_4_411_0/}
}