Inequality and growth : the role of human capital with heterogeneous skills / Kirill Borissov (European University of St. Petersburg), Stefano Bosi (Université dEvry), Thai Ha-Huy (Université dEvry), Leonor Modesto (UCP, Católica Lisbon School of Business & Economics and IZA) ; IZA. Bonn : IZA, July 2016