@article{PMIHES_1992__76__165_0,
     author = {Gromov, Michael and Schoen, Richard},
     title = {Harmonic maps into singular spaces and $p$-adic superrigidity for lattices in groups of rank one},
     journal = {Publications Math\'ematiques de l'IH\'ES},
     pages = {165--246},
     publisher = {Institut des Hautes \'Etudes Scientifiques},
     volume = {76},
     year = {1992},
     mrnumber = {94e:58032},
     zbl = {0896.58024},
     language = {en},
     url = {http://archive.numdam.org/item/PMIHES_1992__76__165_0/}
}