Infinite Root Systems, Representations of Graphs and Invariant Theory. V.G. Kac — 1980 Inventiones mathematicae
Torsion in cohomology of compact Lie groups and Chow rings of reductive algebraic groups. V.G. Kac — 1985 Inventiones mathematicae
Basic Representations of Affine Lie Algebras and Dual Resonance Models. V.G. Kac; I.B. Frenkel Inventiones mathematicae
Unitary structure in representations of infinite-dimensional groups and a convexity theorem. V.G. Kac; D.H. Peterson — 1984 Inventiones mathematicae