Kegel, Patrícia Luiza, and Mohamed Amal. 2010. “Political Union or Space of Economic Coordination: The European Integration Project Indefinability and the Treaty of Lisbon”. Seqüência - Legal and Political Studies 29 (57). Florianópolis:153-76. https://doi.org/10.5007/2177-7055.2008v29n57p153.