Thin-shell wormholes with a generalized Chaplygin gas in Einstein–Born–Infeld theory ErnestoF. Eiroa and Griselda Figueroa Aguirre Eur. Phys. J. C, 72 11 (2012) 2240 Published online: 27 November 2012 DOI: 10.1140/epjc/s10052-012-2240-6