electromagnetic radiation norms, shall consult the Communications Regulatory Authority and shall exchange relevant information with it. 10. The Communications Regulatory Authority and the Department of Statistics shall on request provide other state and/or municipal institutions with the available information required to perform their functions to the extent that it is necessary for the performance of such functions. Having received confidential information, state and/or municipal institutions must ensure the proper protection thereof. 11. The Communications Regulatory Authority shall cooperate with the Second Investigation Department under the Ministry of National Defence within the scope of competence defined by the legal acts regulating the activity of these institutions. 12. The procedure and conditions of cooperation between the institutions of the Republic of Lithuania, including conditions designed for ensuring proper performance of functions by each of the institutions concerned, the settlement of disputes relating to the collision of competences, and the formation of uniform practices, may be regulated by agreements between such institutions. Such agreements shall be published on the websites of the institutions concerned. Article 13. Cooperation with the European Union institutions, the Body of European Regulators for Electronic Communications and the European Union Member States 1. State institutions shall cooperate with the European Union institutions, the Body of European Regulators for Electronic Communications and the European Union Member States as well as their institutions in conformity with European Union legal acts and mutual agreements. The documents drawn up, issued or approved by European Union institutions, the Body of European Regulators for Electronic Communications or the European Union Member States as well as their copies and translations shall not be subject to any authentication procedures. 2. The Communications Regulatory Authority shall submit information to the European Commission, the Body of European Regulators for Electronic Communications and the national regulatory authorities of the European Union Member States, upon a reasoned request by these institutions. Should the Communications Regulatory Authority provide the European Commission with information, or part of information, which was received earlier from undertakings at the request of the Communications Regulatory 25