Theisen, Stefan Quantum Gravity & Unified Theories, AEI-Golm, MPI for Gravitational Physics, Max Planck Society;
379712.pdf (Publisher version), 597KB
Theisen, S. (1986). Fourth-order supergravity. Nuclear Physics B, 263(3-4), 687-703. doi:10.1016/0550-3213(86)90281-6.