%0 Journal Article %A VerĂ³nica Poblete %A Juan C. Pozo %T Periodic solutions of an abstract third-order differential equation %J Studia Mathematica %D 2013 %P 195-219 %V 215 %N 3 %U http://geodesic.mathdoc.fr/articles/10.4064/sm215-3-1/ %R 10.4064/sm215-3-1 %G en %F 10_4064_sm215_3_1