@article{PORMA_1995__52_1_47467,
     author = {Qiu, Jinghui},
     title = {An extension of {Amir-Lindenstrauss} theorem.},
     journal = {Portugaliae mathematica},
     pages = {41--47},
     year = {1995},
     volume = {52},
     number = {1},
     zbl = {0843.46006},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/PORMA_1995__52_1_47467/}
}