Enveloping branes and brane-world singularities Ignatios Antoniadis, Spiros Cotsakis and Ifigeneia Klaoudatou Eur. Phys. J. C, 74 12 (2014) 3192 Published online: 12 December 2014 DOI: 10.1140/epjc/s10052-014-3192-9