@article{BSMF_2002__130_1_35_0,
     author = {Komatsu, Takao},
     title = {An approximation property of quadratic irrationals},
     journal = {Bulletin de la Soci\'et\'e Math\'ematique de France},
     pages = {35--48},
     publisher = {Soci\'et\'e math\'ematique de France},
     volume = {130},
     number = {1},
     year = {2002},
     doi = {10.24033/bsmf.2411},
     mrnumber = {1906191},
     zbl = {1027.11047},
     language = {en},
     url = {http://www.numdam.org/articles/10.24033/bsmf.2411/}
}