Nicolai, Hermann Quantum Gravity & Unified Theories, AEI-Golm, MPI for Gravitational Physics, Max Planck Society;
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van Proeyen, A., & Nicolai, H. (1982). Off-shell representations with central charges for ten-dimensional super Yang-Mills theory. Nuclear Physics B, 203(3), 510-530. doi:10.1016/0550-3213(82)90328-5.