%0 Journal Article %A Lovicar, Vladimír %T Periodic solutions of nonlinear abstract second order equations with dissipative terms %J Časopis pro pěstování matematiky %D 1977 %P 364-369 %V 102 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.21136/CPM.1977.108529/ %R 10.21136/CPM.1977.108529 %G en %F 10_21136_CPM_1977_108529