@article{10_1017_S0008439500024693,
     author = {Zassenhaus, Hans},
     title = {An {Introduction} to {Diophantine} {Approximation} by {J.} {W.} {S.} {Cassels,} {Cambridge} {University} {Press} 1957, {I-X,} p. 1166 {(Cambridge} {Tracts} {No.} 45, published by {MacMillan.} {Canadian} {List} {Price} $3.85).},
     journal = {Canadian mathematical bulletin},
     pages = {57--57},
     year = {1958},
     volume = {1},
     number = {1},
     doi = {10.1017/S0008439500024693},
     url = {http://geodesic.mathdoc.fr/articles/10.1017/S0008439500024693/}
}