%0 Journal Article %A A. V. Ustinov %T Calculation of the variance in a problem in the theory of continued fractions %J Sbornik. Mathematics %D 2007 %P 887-907 %V 198 %N 6 %U http://geodesic.mathdoc.fr/item/SM_2007_198_6_a6/ %G en %F SM_2007_198_6_a6