no. 1

Symmetric and asymmetric Diophantine approximation of continued fractions
Bulletin de la Société Mathématique de France, Tome 117 (1989) no. 1, pp. 59-67. 
@article{BSMF_1989__117_1_59_0,
     author = {Tong, Jingcheng},
     title = {Symmetric and asymmetric Diophantine approximation of continued fractions},
     journal = {Bulletin de la Soci\'et\'e Math\'ematique de France},
     pages = {59--67},
     publisher = {Soci\'et\'e math\'ematique de France},
     volume = {117},
     number = {1},
     year = {1989},
     doi = {10.24033/bsmf.2112},
     zbl = {0684.10030},
     mrnumber = {90k:11086},
     language = {en},
     url = {http://archive.numdam.org/articles/10.24033/bsmf.2112/}
}
Tong, Jingcheng. Symmetric and asymmetric Diophantine approximation of continued fractions. Bulletin de la Société Mathématique de France, Tome 117 (1989) no. 1, pp. 59-67. doi : 10.24033/bsmf.2112. http://archive.numdam.org/articles/10.24033/bsmf.2112/

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