@article{JRAM_1997__486_153908,
     author = {Karl-Theodor Sturm},
     title = {Monotone approximation of energy functionals for mappings into metric spaces, {I.}},
     journal = {Journal f\"ur die reine und angewandte Mathematik},
     pages = {129--152},
     publisher = {mathdoc},
     volume = {486},
     year = {1997},
     zbl = {0879.58018},
     url = {http://geodesic.mathdoc.fr/item/JRAM_1997__486_153908/}
}