Notes, Comments and Preliminary results Sep 24 2020 Gilles Q Kane , Marius C. O. Amba and Taoufiki Mbratana   Early view of the potential impact of government policy responses on reproductive number of COVID-19 in African countries: Evidence from Cameroon   Abstract  Contact Information  Citation  Full Text  -  Preliminary Result   Aug 31 2017 Amba Oyon Claude Marius , Taoufiki Mbratana and Kane Gilles Quentin   Assessing the current account sustainability in ECCAS economies: A dual cointegration analysis   Abstract  Contact Information  Citation  Full Text  -  Preliminary Result