Sisay Demissew BEYENE and Balázs KOTOSZ, “External Debt and Private Investment: The Case of Heavily Indebted Poor Countries (HIPCs) in Sub-Saharan Africa (SSA)” Proceedings of the 34th International Business Information Management Association (IBIMA), ISBN: 978-0-9998551-3-3, 13-14 November 2019, Madrid, Spain, p. 5809-5817.
Sisay Demissew BEYENE and Balázs KOTOSZ, “The Relative Effectiveness of Fiscal and Monetary Policies on Ethiopian Economy: Johansen Cointegration Approach” Proceedings of the 34th International Business Information Management Association (IBIMA), ISBN: 978-0-9998551-3-3, 13-14 November 2019, Madrid, Spain, p. 5818-5830.