Nicolai, Hermann Quantum Gravity & Unified Theories, AEI-Golm, MPI for Gravitational Physics, Max Planck Society;
50991.pdf (Preprint), 247KB
Feingold, A. J., & Nicolai, H. (2004). Subalgebras of Hyperbolic Kac-Moody Algebras. In N. Sthanumoorthy, & K. Misra (Eds.), Kac-Moody Lie Algebras and Related Topics (pp. 97-114).