@article{SF_1996__52_3_135448,
     author = {M. Jung},
     title = {Multiplicative perturbations in semigroup theory with the {(Z)-condition.}},
     journal = {Semigroup forum},
     pages = {197--212},
     publisher = {mathdoc},
     volume = {52},
     number = {3},
     year = {1996},
     zbl = {0841.47023},
     url = {http://geodesic.mathdoc.fr/item/SF_1996__52_3_135448/}
}