Notes, Comments and Preliminary results Sep 17 2021 Elie Bouri , Rangan Gupta , Chi keung marco Lau and David Roubaud   Risk aversion and Bitcoin returns in extreme quantiles   Abstract  Contact Information  Citation  Full Text  -  Note   Mar 25 2020 Christina Christou , Giray Gozgor , Rangan Gupta and Chi keung Marco Lau   Are Uncertainties across the World Convergent?   Abstract  Contact Information  Citation  Full Text  -  Note   Sep 30 2016 Simplice Asongu and Rangan Gupta   Trust and quality of growth: a note   Abstract  Contact Information  Citation  Full Text  -  Note