%0 Journal Article
%A E. V. Podsypanin
%T Length of the period of a quadratic irrational
%J Zapiski Nauchnykh Seminarov POMI
%D 1979
%P 95-99
%V 82
%I mathdoc
%U http://geodesic.mathdoc.fr/item/ZNSL_1979_82_a4/
%G ru
%F ZNSL_1979_82_a4