Republic of Serbia:

Ministry of Culture and Media www.kultura.gov.rs
Ministry of Trade and Telecommunication www.mtt.gov.rs
Republic Agency for Electronic Communications www.ratel.org.rs

Regulatory authorities:

Post and Electronic Communications Agency of the Republic of Slovenia www.apek.si
Broadcasting Agency of the Republic of Montenegro www.ardcg.org
Council of Electronic Media of the Republic of Croatia www.e-mediji.hr
Communications Regulatory Agency of BiH www.rak.ba

International organizations and initiatives:

European Platform of Regulatory Authorities EPRA www.epra.org
Mediterranean network of Regulatory Authorities (MNRA) www.rirm.org 
Forum of the Black Sea Broadcasting Regulatory Authorities (BSEC-BRAF) www.braf.info
Central European Regulatory Forum (CERF) www.cerfportal.org