Micro-foundations of fragility : concepts, measurement and application / Ghassan Baliki (Leibniz Institute of Vegetable and Ornamental Crops, and ISDC), Tilman Brück (ISDC, Leibniz Institute of Vegetable and Ornamental Crops, and IZA), Neil T.N. Ferguson (ISDC - International Security and Development Center), Sindu W. Kebede (Humboldt University Berlin and ISDC) ; IZA Institute of Labor Economics. Bonn, Germany : IZA Institute of Labor Economics, November 2017