%0 Journal Article %A Magal, Pierre %A Seydi, Ousmane %T Variation of constants formula and exponential dichotomy for nonautonomous non-densely defined Cauchy problems %J Canadian journal of mathematics %D 2021 %P 1347-1389 %V 73 %N 5 %U http://geodesic.mathdoc.fr/articles/10.4153/S0008414X20000541/ %R 10.4153/S0008414X20000541 %F 10_4153_S0008414X20000541