Journal Club on the papers by Gliozzi ''Dirac-Born-Infeld Action from the Spontaneous Breakdown of Lorentz Symmetry in Brane-World'' (arXiv number: 1103.5377 [hep-th]) and by Casalbuoni et al. ''Space-time transformations of the Born-Infeld gauge field of a D-brane'' (arXiv number: 1104.4916 [hep-th]).