@article{IM_1980__62_142773,
     author = {J. Jost and S. Hildebrandt and K.-O. Widman},
     title = {Harmonic {Mappings} and {Minimal} {Submanifolds.}},
     journal = {Inventiones mathematicae},
     pages = {269--298},
     publisher = {mathdoc},
     volume = {62},
     year = {1980},
     zbl = {0446.58006},
     url = {http://geodesic.mathdoc.fr/item/IM_1980__62_142773/}
}