@article{SF_1994__49_2_135362,
     author = {R. Triggiani},
     title = {A sharp result on the exponential operator-norm decay of a family of strongly continuous semigroups.},
     journal = {Semigroup forum},
     pages = {387--396},
     publisher = {mathdoc},
     volume = {49},
     number = {2},
     year = {1994},
     zbl = {0817.47055},
     url = {http://geodesic.mathdoc.fr/item/SF_1994__49_2_135362/}
}