LECHMAN, Ewa. Catching-up and Club Convergence From Cross-National Perspective a Statistical Study for the Period 1980–2010. Equilibrium. Equilibrium. Quarterly Journal of Economics and Economic Policy. Online. 10 June 2012. Vol. 7, no. 3, pp. 95-109. [Accessed 23 July 2024]. DOI 10.12775/EQUIL.2012.021.