@article{MAN_1953__126_160334,
     author = {J.W.S. Cassels},
     title = {A {New} {Inequality} with {Application} to the {Theory} of {Diophantine} {Approximation.}},
     journal = {Mathematische Annalen},
     pages = {108--118},
     publisher = {mathdoc},
     volume = {126},
     year = {1953},
     zbl = {0051.28604},
     url = {http://geodesic.mathdoc.fr/item/MAN_1953__126_160334/}
}