The 4th edition of the International Environmental Film Festival "Green Fest" will take place from 13 to 15 November 2013, in Belgrade, Serbia. The event will be organised by the Environment Improvement Centre, with the support of the Environmental Protection Secretariat of the City of Belgrade and Vip mobile company, in cooperation with Dom omladine Beograd. The call for environmental amateur and short films is open until 11 October. Interested authors can find the guidelines of the call on the website of the event. The list of films selected will also be announced on that website.