@article{10_4064_aa132_3_2,
     author = {Tomas Persson and J\"org Schmeling},
     title = {Dyadic {Diophantine} approximation and
 {Katok's} horseshoe approximation},
     journal = {Acta Arithmetica},
     pages = {205--230},
     publisher = {mathdoc},
     volume = {132},
     number = {3},
     year = {2008},
     doi = {10.4064/aa132-3-2},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/aa132-3-2/}
}