PIETRYKA, Ilona. The Efficiency of the Monetary Policy Instruments of the E E uropean Central Bank in Liquidity Regulating in the Euro Area. Equilibrium. Equilibrium. Quarterly Journal of Economics and Economic Policy. Online. 1 December 2010. Vol. 5, no. 2, pp. 195-208. [Accessed 4 July 2024]. DOI 10.12775/EQUIL.2010.035.