Nicolai, Hermann Quantum Gravity & Unified Theories, AEI-Golm, MPI for Gravitational Physics, Max Planck Society;
346888.pdf (Publisher version), 2MB
De Wit, B., Tollsten, A. K., & Nicolai, H. (1993). Locally supersymmetric D = 3 non-linear sigma models. Nuclear Physics B, 392(1), 3-38. doi:10.1016/0550-3213(93)90195-U.