@article{JTNB_2005__17_1_207_0,
     author = {Bernard de Mathan},
     title = {On a mixed {Littlewood} conjecture for quadratic numbers},
     journal = {Journal de th\'eorie des nombres de Bordeaux},
     pages = {207--215},
     publisher = {Universit\'e Bordeaux 1},
     volume = {17},
     number = {1},
     year = {2005},
     doi = {10.5802/jtnb.487},
     mrnumber = {2152221},
     zbl = {1165.11325},
     language = {en},
     url = {https://jtnb.centre-mersenne.org/articles/10.5802/jtnb.487/}
}