“…As the indicator is not available for a few newly acceding Eastern European countries (Bulgaria, Estonia, Croatia, Lithuania, Latvia, and Romania), we attribute the average EPS of other newly acceding Eastern European countries for which data is available (Czech Republic, Hungary, Poland, Slovenia, and Slovakia). The rationale is that the evolution of national environmental policy stringency for all of these newly acceding countries is likely to be rather similar as all of these countries had to adopt the EU acquis on environmental policy (Carr and Massey, 2006). capacity to specialise in a green technology (as we have defined it in Section 3.2.1), our Relatednessit,t-1 variable offers information on the dyadic cognitive proximity between the green technology at t and all technologies in which the region was already specialised in t-1 (see Appendix A).…”