Constitutional Law professor (Profesora Titular) at the University of Barcelona. Columbia Law School LLM. Harvard Law School and European University Institute in Florence visiting researcher. EU, UN, OAS and OSCE electoral observer and legal expert for more than twenty years in countries such as Egypt, Ghana, Sudan, East Timor, Venezuela, Cambodia, Sri Lanka, Togo, Tanzania, El Salvador, Mexico, Tunisia, Bosnia, etc. Did and published drawings of all of them.