35. Are there provisions for any other form of indirect public funding?

"Services and goods from public sources are services and goods defined under separate regulations given to political entities by organs of the Republic of Serbia, autonomous province and local government, as well as by other organizations founded by them. It is obligatory to grant services and goods referred in paragraph 1 of this Article to all political entities under equal terms. Organs of the Republic of Serbia, autonomous province and local government, as well as other organizations founded by them shall more specifically regulate granting of services and goods referred in paragraph 1 of this Article." 
Source: Article 6 Law on financing political activities, 2022.

It has not been elaborated in details, therefore, the law tasks state institutions to regulate details.