Birkbeck College, University of London; Anne Goujon - World Population Program, International Institute for Applied Systems Analysis (IIASA); Vegard Skirbekk World Population Program, International Institute for Applied Systems Analysis (IIASA).<ref>[http://questionevolution.blogspot.com/2012/08/immigrants-become-more-religious-longer.html Religious immigrants will alter the religious landscape of Europe]</ref> | Birkbeck College, University of London; Anne Goujon - World Population Program, International Institute for Applied Systems Analysis (IIASA); Vegard Skirbekk World Population Program, International Institute for Applied Systems Analysis (IIASA).<ref>[http://questionevolution.blogspot.com/2012/08/immigrants-become-more-religious-longer.html Religious immigrants will alter the religious landscape of Europe]</ref> |