Folfas, Paweł, and Magdalena Słok-Wódkowska. 2011. “EUROPEAN COMMON CURRENCY OUTSIDE EURO ZONE AND FIXED EXCHANGE RATES VS. EURO: ECONOMIC AND LEGAL ASPECTS”. Ekonomia I Prawo. Economics and Law 7 (1):371-90. https://doi.org/10.12775/EiP.2011.023.