@article{AM2_1987__32_137184,
     author = {E. Preissmann},
     title = {Equations fonctionnelles et estimations de normes de matrices.},
     journal = {Aequationes mathematicae},
     pages = {195--212},
     publisher = {mathdoc},
     volume = {32},
     year = {1987},
     zbl = {0625.39009},
     url = {http://geodesic.mathdoc.fr/item/AM2_1987__32_137184/}
}