Dvali, G. Gabadadze, and M. Porrati, "4-D gravity on a bran in 5-D Minkowski space" Phys. Lett. B 485 (2000) 208 [arXiv:hep-th/0005016]; M. A. Luty, M. Porrati and R. Rattazzi, "Strong interactions and stability in the DGP model" JHEP 0309 (2003) 029 [arXiv:hep-th/0303116] [42] S. Endlich, K. Hinterbichle

ck, "Comments on Nonlinear Wave Equations as Models for Elementary Particles" J. Math. Phys. 5 (1964) 1252-1254 [41] G. R. Dvali, G. Gabadadze, and M. Porrati, "4-D gravity on a bran in 5-D Minkowski space" Phys. Lett. B 485 (2000) 208 [arXiv:hep-th/0005016]; M. A. Luty, M. Porrati and R. Rattazzi, "Stron