“..., or expands forever, depending only on the sign of its initial velocity. © 2004 The American Physical Society....”

“... the symmetry, for shells around vacuum and shells surrounding noncharged black holes. © 2011 American Physical...”

“... of the model is analyzed. © 2005 The American Physical Society....”

“... of the parameters compatible with stable configurations. © 2013 American Physical Society....”

“... perturbation. © 2007 The American Physical Society....”

“.... © 2010 The American Physical Society....”

“.... © 2015 American Physical Society....”

“.... © 2007 The American Physical Society....”

“... to Einstein-Maxwell spacetimes. © 2010 The American Physical Society....”