@article{MAN_1983__262_163689,
     author = {Kirsti Oja},
     title = {Exceptional {Sets} and {Harmonie} {Morphisms.}},
     journal = {Mathematische Annalen},
     pages = {45--56},
     publisher = {mathdoc},
     volume = {262},
     year = {1983},
     zbl = {0489.31011},
     url = {http://geodesic.mathdoc.fr/item/MAN_1983__262_163689/}
}