@article{MM2_1984__47_155006,
     author = {Michael Gr\"uter},
     title = {Conformally invariant variational integrals and the removability of isolated singularities.},
     journal = {Manuscripta mathematica},
     pages = {85--104},
     publisher = {mathdoc},
     volume = {47},
     year = {1984},
     zbl = {0543.49020},
     url = {http://geodesic.mathdoc.fr/item/MM2_1984__47_155006/}
}