Main Research Topics Legal epistemology - Evidence and Proof - Causation and Law Legal Theory - Normative Hierarchies - Dynamic of Legal Systems On Line Publications - "Right to Proof and Rationality of Judicial Decisions", in Ferrer Beltrán, J., Narváez Mora, M. (eds.): Law, Politics, and Morality: European Perspectives. On Knowledge and Adjudication of National and European Law, Duncker und Humblot, Berlin, 2006- "Los estándares de prueba en el proceso penal español", Cuadernos electrónicos de filosofía del derecho, nº 15, 2007.