@article{10_4064_aa139_4_4,
     author = {Xin Tong and Baowei Wang},
     title = {How many points contain arithmetic progressions in their
 continued fraction expansion?},
     journal = {Acta Arithmetica},
     pages = {369--376},
     publisher = {mathdoc},
     volume = {139},
     number = {4},
     year = {2009},
     doi = {10.4064/aa139-4-4},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/aa139-4-4/}
}