@article{CMUC_2011__52_4_a3,
     author = {Kmit, I.},
     title = {$C^1$-smoothness of {Nemytskii} operators on {Sobolev-type} spaces of periodic functions},
     journal = {Commentationes Mathematicae Universitatis Carolinae},
     pages = {507--517},
     publisher = {mathdoc},
     volume = {52},
     number = {4},
     year = {2011},
     mrnumber = {2863995},
     zbl = {1247.47044},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/CMUC_2011__52_4_a3/}
}