%0 Journal Article %A Preda, Ciprian %T On the Roughness of Quasinilpotency Property of One-parameter Semigroups %J Canadian mathematical bulletin %D 2017 %P 364-371 %V 60 %N 2 %U http://geodesic.mathdoc.fr/articles/10.4153/CMB-2016-088-0/ %R 10.4153/CMB-2016-088-0 %F 10_4153_CMB_2016_088_0