Nicolai, Hermann Quantum Gravity & Unified Theories, AEI-Golm, MPI for Gravitational Physics, Max Planck Society;
351306.pdf (Verlagsversion), 2MB
De Wit, B., & Nicolai, H. (1984). On the relation between d = 4 and d = 11 supergravity. Nuclear Physics B, 243(1), 91-111. doi:10.1016/0550-3213(84)90387-0.