%0 Journal Article %A Cherubini, Alessandra %A Varisco, Ada %T Quasi Hamiltonian semigroups %J Czechoslovak Mathematical Journal %D 1983 %P 131-140 %V 33 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.21136/CMJ.1983.101864/ %R 10.21136/CMJ.1983.101864 %G en %F 10_21136_CMJ_1983_101864