Sofia Municipality

https://www.sofia.bg/

Burgas Municipality

https://www.burgas.bg/

Ruse Municipality

http://ruse-bg.eu/index.php

Stara Zagora Municipality

https://www.starazagora.bg

Veliko Tarnovo Municipality

https://www.veliko-tarnovo.bg

Montana Municipality

http://www.montana.bg/

Club „Economika 2000“

http://www.club2000.org