[1] Zeppelin Univ, ZF Ctr Sustainabil Res, Friedrichshafen, Germany
[2] Slovak Natl Bank, Bratislava, Slovakia
[3] West Univ Timisoara, East European Ctr Res Econ & Business ECREB, Timisoara, Romania
[4] Univ Roma Tor Vergata, Dept Finance & Banking, Rome, Italy
[5] Roma Tre Univ, Dept Polit Sci, Rome, Italy
[6] Western Caspian Univ, Econ Res Ctr, Baku, Azerbaijan