• Karlsruhe v. Lisbon : an overture to a constitutional dialoge from an Estonian perspectiveKerikmäe, Tanel; Nyman-Metcalf, Katrin MerikeEuropean journal of law reform2010 / 3-4, p. 373-387 https://heinonline.org/HOL/LandingPage?handle=hein.journals/ejlr12&div=24&id=&page=