For my material I needed the permission of the Hungarian Foreign Ministry. By the way, they have their own archives and if you are lucky they may let you in. The Ministry of Interior also has archives and occasionally allows research access. A new law providing protection for all living individuals has recently made access problematic. They house an broad collection of county and municipal records.
Documents are obtainable the same day, and it is also possible to replicate for a reasonable charge.
Preserving Bosnian manuscripts, archives, etc. The Bosnian Manuscript Ingathering Project, an international effort to collect facsimiles, images, and copies of the cultural documentation of Bosnia-Herzegovina, has recently established a Web page. Although still under construction, the site already offers both telling documentation of one of the devastating consequences of modern ethnic conflict, and broadcasts a moving appeal for assistance in restoring a Balkan and world cultural resource. The hope page follows below. Virtually all of its contents were consumed by the flames.