1. S. Deser, R. Jackiw, Ann. Phys. 153 (1984) 405; S. Deser, R. Jackiw, G.'t Hooft, Ann. Phys. 152 (1984) 220.
2. N. Arkani-Hamed, S. Dimopoulos, G. Dvali, Phys. Lett. B429 (1998) 263; Phys. Lett. B436 (1998) 257; Phys. Rev. D59 (1999) 086004; I. Antoniadis, N. Arkani-Hamed, S. Dimopoulos, G. Dvali, Phys. Lett. B436 (1998) 257.
3. N. Kaloper, I. Kogan, K. Olive, Phys. Rev. D57 (1998) 7340; ibid. D60 (1999) 049901; K. Benakli, Int. J. Mod. Phys. D8 (1999) 153; Phys. Lett. B447 (1999) 52; N. Kaloper, A. Linde, Phys. Rev. D59 (1999) 101303; D. Lyth, Phys. Lett. B448 (1999) 191; G. Dvali, S.-H. Tye, Phys. Lett B450 (1999) 72; C. Csaki, M. Graesser, J. Terning, Phys. Lett. B456 (1999) 16; G. Dvali, Phys. Lett. B459 (1999) 489; A. Lukas, B. Ovrut, D. Waldram, hep-th/9806022, hep-th/9902071; N. Arkani-Hamed, S. Dimopoulos, J. March-Russell, hep-th/9808124; H. Reall, hep-th/9809195; C. Kolda, D. Lyth, hep-ph/9812234; M. Gogberashvili, hep-ph/9812296; A. Mazumdar, hep-ph/9902381; N. Arkani-Hamed, S. Dimopoulos, N. Kaloper, J. March-Russell, hep-ph/9903224; H. Chamblin, H. Reall, hep-th/9903225; G. Dvali, M. Shifman, hep-th/9904021; A. Riotto, hep-ph/9904485; P. Binetruy, C. Deffayet, D. Langlois, hep-th/9905012.
4. L. Randall, R. Sundrum, hep-th/9905221; hep-th/9906064.
5. N. Kaloper, hep-th/9905210; E. Halyo, hep-ph/9905244; T. Nihei, hep-ph/9905487; A. Kehagias, hep-th/9906204; C. Csaki, M. Graesser, C. Kolda, J. Terning, hep-ph/9906513; J. Cline, C. Grojean, G. Servant, hep-ph/9906523; D. Chung, K. Freese, hep-ph/9906542; P. Steinhard, hep-th/9907080; N. Arkani-Hamed, S. Dimopoulos, G. Dvali, N. Kaloper, hep-th/9907209; W. Goldberger, M. Wise, hep-ph/9907218, hep-ph/9907447; I. Oda, hep-th/9908104; J. Lykken, L. Randall, hep-th/9908076; T. Li, hep-th/9908174; C. Csaki, Y. Shirman, hep-th/9908186; K. Dienes, E. Dudas, T. Ghergetta, hep-ph/9908530; A. Nelson, hep-th/9909001; H.B. Kim, H.D. Kim, hep-th/9909053; K. Behrndt, M. Cvetic, hep-th/9909058; K. Skenderis, P. Townsend, hep-th/9909070; H. Hatanka, M. Sakamoto, M. Tachibana, K. Takenaga, hep-th/9909076; U. Ellwanger, hep-th/9909103; E. Halyo, hep-th/9909127; A. Chamblin, G.W. Gibbons, hep-th/9909130; O. DeWolfe, D.Z. Freedman, S.S. Gubser, A. Karch, hep-th/9909134.