Bergshoeff, E., Sezgin, E., Townsend, P. K.: Phys. Lett.189B, 75 (1987)
Dolan, B.: Phys. Lett.140B, 304 (1984)
Castellani, L., Romans, L. J., Warner, N. P.: Ann. Phys. (NY)157, 394 (1984)
Duff, M. J., Nilsson, B. E. W., Pope, C. N.: Phys. Reps.130, 1 (1986); de Wit, B., Nicolai, H., Warner, N. P.: Nucl. Phys.B255, 29 (1985)
Pilch, K., Townsend, P. K., van Nieuwenhuizen, P.: Nucl. Phys.B242, 377 (1984)
Kobayashi S., Nomizu, K.: Foundations of Differential Geometry, vol 2 New York: Wiley 1969
Nilsson, B. E. W., Pope, C. N.: Class. Quantum Grav.1, 499 (1984)
G�naydin, M., Sierra, G., Townsend, P. K.: Class Quantum Grav.3, 763 (1986)
Marcus, N., Schwarz, J. H.: Nucl. Phys.B228, 145 (1983)