@article{KJM_2005_28_1_a13,
     author = {F. Dedagi\'c and N. Oki\v{c}i\'c},
     title = {On the compactness and condensing of nonlinear superposition operators},
     journal = {Kragujevac Journal of Mathematics},
     pages = {173 - 183},
     publisher = {mathdoc},
     volume = {28},
     number = {1},
     year = {2005},
     zbl = {1119.47059},
     url = {http://geodesic.mathdoc.fr/item/KJM_2005_28_1_a13/}
}