@article{MT_2007_10_1_a3,
     author = {V. N. Berestovskii and Yu. G. Nikonorov},
     title = {Continued {Fractions,} the {Group} $\mathrm{GL}(2,\mathbb Z)$, and {Pisot} {Numbers}},
     journal = {Matemati\v{c}eskie trudy},
     pages = {97--131},
     publisher = {mathdoc},
     volume = {10},
     number = {1},
     year = {2007},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MT_2007_10_1_a3/}
}