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Y. D’App Benakli ]; 1 1 2 2 2 1 S Dudas tribution that − L. I. Phys. op systems nomaly 631 L.E. K. G. 464 E. = = = (9 and A and con Phys. (1986) (1986) orbifolds B and others: ane − string form: B 10 10 10 a scalar tonj, ij µi µν x Nucl. endants or. T T T ersymmetry endence: , R e-I 173 171 hler ett. the · has hinski consider L world sup Phys. The desc ory B B typ Ω dep toniadis, toniadis, toniadis, Ricci of among e olc − Fisc g. ersymmetry, Aldazabal, Aldazabal Blumenhagen, Angelan en e w Sugimoto, P o . An An An is ane ane ane-antibr om ett. ett. term the hep-th/9907184 = Nucl. L L I. Op [ sup M-the C. I. br 91 fr br G. br Pr G. Phys. W. R. J. I. S. See, If 10 [5] [6] [3] [4] [1] [2] R compact This References frame And JHEP12(2002)052 , , 01 in es 231 19 angles dilaton Phys. in av. surfac at worlds dimensions ane ]. gy Gr and (2001) a ane . anes extr worlds metal 052 ]; Ener br antibr oidal 505 br 1988. of ge tor Quant. B ]. ane e ane om lar High cting in br fr ]; (2002) 1998. 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