@article{SF_1982__24_134532,
     author = {H.D. Junghenn},
     title = {Amenability induced by amenable homomorphlc images.},
     journal = {Semigroup forum},
     pages = {11--24},
     publisher = {mathdoc},
     volume = {24},
     year = {1982},
     zbl = {0501.43001},
     url = {http://geodesic.mathdoc.fr/item/SF_1982__24_134532/}
}