%0 Journal Article
%A Mollin, R. A.
%A Srinivasan, A.
%T Pell Equations: Non-Principal Lagrange Criteria and Central Norms
%J Canadian mathematical bulletin
%D 2012
%P 774-782
%V 55
%N 4
%U http://geodesic.mathdoc.fr/articles/10.4153/CMB-2011-118-9/
%R 10.4153/CMB-2011-118-9
%F 10_4153_CMB_2011_118_9