@article{PORMA_1967__26_4_115051,
     author = {Hsiang, Fu Cheng},
     title = {On a quasi-monotonic sequence},
     journal = {Portugaliae mathematica},
     pages = {483--486},
     publisher = {mathdoc},
     volume = {26},
     number = {4},
     year = {1967},
     mrnumber = {0259410},
     zbl = {0187.01801},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/PORMA_1967__26_4_115051/}
}