@article{AIHPC_1998__15_2_151_0,
     author = {Gr\"uter, Michael},
     title = {Regularity at the free boundary of two-dimensional stationary harmonic maps},
     journal = {Annales de l'I.H.P. Analyse non lin\'eaire},
     pages = {151--167},
     publisher = {Gauthier-Villars},
     volume = {15},
     number = {2},
     year = {1998},
     mrnumber = {1614642},
     zbl = {0910.49021},
     language = {en},
     url = {http://www.numdam.org/item/AIHPC_1998__15_2_151_0/}
}