beli karton

1. foreigner's address registration certificate; white card
   Bez belog kartona ne mogu da predam zahtev za boravak. — Without the white card I can't apply for residence.
   Stanodavac je išao sa mnom da uradimo beli karton. — My landlord went with me to get the white card done.

Literally "white card" (karton here is a card, a form): the police certificate of a foreigner's registered address, not the residence permit; people say "uraditi / izvaditi beli karton".