Nicolai, Hermann Quantum Gravity & Unified Theories, AEI-Golm, MPI for Gravitational Physics, Max Planck Society;
60314.pdf (Any fulltext), 2MB
Nicolai, H., & Nagar, A. (2001). Infinite-dimensional symmetries in gravity. In I. Ciufolini, V. Gorini, U. Moschella, & P. Fré (Eds.), Gravitational Waves (pp. 243-279). Bristol: Institute of Physics.