Markku Kiikeri defended his doctoral thesis in the European University Institute 1999 and has taught and done research in European law in the universities of Turku, Helsinki and Rovaniemi (Finland) since 2000. He has been a visiting lecturer in various European universities and in UNAM/La Salle (Mexico). His specialty is European union law and legal/social theory. He is an authorized attorney. Latest productions deals with legal reasoning and EU-law adjudication. Markku´s problematization in this group is based on dialectics and negation.