%0 Journal Article %A Dmitry Gayfulin %T Attainable numbers and the Lagrange spectrum %J Acta Arithmetica %D 2017 %P 185-199 %V 179 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/aa8588-12-2016/ %R 10.4064/aa8588-12-2016 %G en %F 10_4064_aa8588_12_2016