@article{AIHPC_1994__11_6_633_0, author = {Zhang, Dong}, title = {An energy estimate of an exterior problem and a {Liouville} theorem for harmonic maps}, journal = {Annales de l'I.H.P. Analyse non lin\'eaire}, pages = {633--642}, publisher = {Gauthier-Villars}, volume = {11}, number = {6}, year = {1994}, zbl = {0834.58017}, mrnumber = {1310625}, language = {en}, url = {http://archive.numdam.org/item/AIHPC_1994__11_6_633_0/} }