Nicolai, Hermann Quantum Gravity & Unified Theories, AEI-Golm, MPI for Gravitational Physics, Max Planck Society;
Nicolai, H. (2002). The principal subalgebra of a hyperbolic KM algebra. Talk presented at Ramanujan International Symposium on "Kac Moody Lie Algebras and Applications". Chennai, India. 2002-01-28 - 2002-01-31.