@article{10_4064_sm202_3_2,
     author = {Elisabetta M. Mangino and Alfredo Peris},
     title = {Frequently hypercyclic semigroups},
     journal = {Studia Mathematica},
     pages = {227--242},
     publisher = {mathdoc},
     volume = {202},
     number = {3},
     year = {2011},
     doi = {10.4064/sm202-3-2},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/sm202-3-2/}
}