48 At the Police Station in Stari grad, receipts for the temporarily confiscated and returned items shall be signed by the persons in custody from whom such items have been confiscated. The Police Administration of Belgrade shall undertake appropriate measures to ensure adequate airing of custody cells. The Police Station in Savski venac shall undertake appropriate measures to ensure custody cells are sufficiently aired and lit. Furthermore, heating shall be installed in these rooms. The Police Station in Savski venac shall whitewash its custody cells for sanitation purposes and shall maintain them in a proper sanitary condition in the future. The Police Station in Stari grad shall undertake appropriate measures to ensure custody cells are sufficiently aired and lit. The Police Station in Stari grad shall whitewash its custody cells for sanitation purposes and shall maintain them in a proper sanitary condition in the future. The Police Station in Stari grad shall install buttons for alarming the police officer on duty in its custody cells. The Police Station in Zvezdara shall undertake appropriate measures to ensure its custody cell is sufficiently lit. Furthermore, heating shall be installed in this room. The Police Station in Zvezdara shall install buttons for alarming the police officer on duty in its custody cell. The Police Station in Palilula shall undertake appropriate measures to ensure its custody cells are sufficiently lit and heated. The Police Station in Palilula shall install buttons for alarming the police officer on duty in its custody cells. The Police Station in Mladenovac shall undertake appropriate measures to ensure its custody cells are sufficiently lit. The Police Station in Mladenovac shall whitewash its custody cells for sanitation purposes and shall maintain them in a proper sanitary condition in the future. The existing custody cell in the Police Station in Sopot shall no longer be used for holding persons in custody. The Police Station in Sopot shall provide a separate custody cell which is compliant with the applicable standards. The Police Station in Novi Beograd shall undertake appropriate measures to ensure its custody cells are sufficiently lit and heated. The Police Station in Novi Beograd shall whitewash its custody cells for sanitation purposes and shall maintain them in a proper sanitary condition in the future. The Police Station in Novi Beograd shall provide clean and dry sanitation facilities with proper sanitation equipment by making the necessary adaptations to the existing toilet. The Police Station in Grocka shall undertake appropriate measures to ensure custody cells are sufficiently aired and lit. The Police Station in Grocka shall whitewash its custody cells for sanitation purposes and shall maintain them in a proper sanitary condition in the future; it shall also maintain its sanitation facilities in a sanitary condition. The Police Station in Grocka shall install buttons for alarming the police officer on duty in its custody cells. The Police Station in Rakovica shall undertake appropriate measures to ensure that custody cells have sufficient lighting, that they are safe for reading without causing visual impairments; it shall also ensure the cells are well-aired and shall install heating. The Police Station in Rakovica