Can information and alternatives to irregular migration reduce "backway" migration from the Gambia? / Tijan L. Bah (World Bank and NOVAFRICA) Catia Batista (Nova School of Business and Economics, NOVAFRICA and IZA), Flore Gubert (IRD, UMR LEDa-DIAL, PSL, UniversitéParis-Dauphine, CNRS and IZA), David McKenzie (World Bank) ; IZA - Institute of Labor Economics