Nicolai, Hermann Quantum Gravity & Unified Theories, AEI-Golm, MPI for Gravitational Physics, Max Planck Society;
351337.pdf (Verlagsversion), 767KB
Bais, F. A., Nicolai, H., & van Nieuwenhuizen, P. (1983). Geometry of coset spaces and massless modes of the squashed seven-sphere in supergravity. Nuclear Physics B, 228(2), 333-350. doi:10.1016/0550-3213(83)90328-0.