Kwame Nkrumah University of Science and Technology, Ghana - Department of Economics, University of Insubria, Kwame Nkrumah University of Science and Technology, Ghana, Kwame Nkrumah University of Science and Technology, Kwame Nkrumah University of Science and Technology, Ghana, Kwame Nkrumah University of Science and Technology, Ghana and Swiss Federal Laboratories for Material Science and Technology (EMPA)