%0 Journal Article %A Gannon, Terry %T The Level 2 and 3 Modular Invariants for the Orthogonal Algebras %J Canadian journal of mathematics %D 2000 %P 503-521 %V 52 %N 3 %U http://geodesic.mathdoc.fr/articles/10.4153/CJM-2000-023-2/ %R 10.4153/CJM-2000-023-2 %F 10_4153_CJM_2000_023_2