Stefanski, Bogdan Quantum Gravity & Unified Theories, AEI-Golm, MPI for Gravitational Physics, Max Planck Society;
3029.pdf (Preprint), 124KB
Stefanski, B. (2002). D-branes, Orientifolds and K-theory. Fortschritte der Physik, 50(8-9), 986-991.