@article{MZ_1988__197_1_183741,
     author = {T. Ando},
     title = {Comparison of {Norms} |||f {(A)} - {f(B)} ||| and |||f {(|A} - {B|)} |||.},
     journal = {Mathematische Zeitschrift},
     pages = {403--410},
     publisher = {mathdoc},
     volume = {197},
     number = {1},
     year = {1988},
     zbl = {0618.47007},
     url = {http://geodesic.mathdoc.fr/item/MZ_1988__197_1_183741/}
}