@article{MOMA_1989__108_2-3_178437,
     author = {Andreas Schief},
     title = {An {Open} {Mapping} {Theorem} for {Measures.}},
     journal = {Monatshefte f\"ur Mathematik},
     pages = {59--70},
     publisher = {mathdoc},
     volume = {108},
     number = {2-3},
     year = {1989},
     zbl = {0679.28004},
     url = {http://geodesic.mathdoc.fr/item/MOMA_1989__108_2-3_178437/}
}