AbstractThe primary fuel carrier of energy in the Polish economy is hard coal. Due to such a high share in the energy balance, it is important to guarantee stable and predictable prices for this raw material and to ensure the possibility of its…
Background: Namibia is an open economy where international trade accounts for a greater
proportion of gross domestic product (GDP). Openness of the Namibian economy for the
period 2010 to 2018 has been on average 111% of GDP. The high level of…