@article{CMJ_2007_57_3_a0,
     author = {Kolk, Enno and Raidj\~oe, Annemai},
     title = {The continuity of superposition operators on some sequence spaces defined by moduli},
     journal = {Czechoslovak Mathematical Journal},
     pages = {777--792},
     year = {2007},
     volume = {57},
     number = {3},
     mrnumber = {2356280},
     zbl = {1174.47048},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/CMJ_2007_57_3_a0/}
}