If an authorized person referred to in Para 1 of this Article has not been appointed, the duties of the authorized person shall be performed by the head of the public authority. Obligation to Publish a Directory Article 39 A state body shall at least once a year publish a directory with the main data about its work, notably: 1) Description of its powers, duties and in-house organization; 2) Data on the budget and means of labor; 3) Data with regard to the types of service it directly provides to interested parties; 4) Procedure for submitting a request to this state body, i.e. for lodging a complaint against its decisions, actions or negligence; 5) Overview of the requests, complaints and other direct measures undertaken by the interested parties, of the decisions by this state body on the submitted requests and lodged complaints, i.e. responses to other direct measures undertaken by interested parties; 6) Data on the manner and place of storing information mediums, type of information it holds, type of information it allows insight in and the description of the procedure for submitting a request; 7) Names of the heads of this state body, descriptions of their powers and duties and procedures by which they reach decisions; 8) The rules and decisions of this state body regarding its transparent work (working hours, address, contact telephones, logo, accessibility for persons with special needs, access to sessions, permissibility of audio and video recording, et al), as well as every authentic interpretation of these decisions; 9) Regulations and decisions on exemptions or limitations of the transparency of work of the state body and explanations thereupon; The state body shall allow an interested party insight in the directory free of charge, or give him/her a copy of the directory provided the party reimburses the necessary costs. Guidebook for Publishing the Directory Article 40 The Commissioner shall publish a guidebook according to which the directory from Article 39 of this Law shall be published and proffer advice at the request of a state body to ensure the correct, complete and timely fulfillment of the obligation to publish a directory. Maintaining Information Mediums Article 41 The public authority shall maintain the information mediums so as to enable the exercise of the right to access information of public importance in keeping with this Law.