Charter of Fundamental Rights of the EU – Multiple sources of fundamental rights in the EU legal system – Non-hierarchical, pluralistic understanding of their interrelationship – Case study: the right to good administration – Difficulties in defining the scope of the right to good administration under the Charter and that of the right to good administration as a general principle of EU law – Adoption of a pluralistic understanding of the EU fundamental rights’ sources allows for a clarification and improved understanding of the individual's rights in the EU legal system