Dozvola Španjolskoga Ministarstva industrije za objavljivanje časopisa Hrvatske revije iz 1970. godine
After the failure to register of the Croatian Review in France, Nikolić settled in Barcelona in 1968, where he received the Spanish government’s permission to publish the quarterly periodical. Permission was granted to him for a period of twenty years, and that concession was valid from 9 September of 1970 to 9 September 1990. This was precisely the year when Nikolić returned to Croatia, where review has once more been published since 1991. The Croatian Review was clandestinely read among the Croatian Marxist intelligentsia, and because of its influence it represented a great threat to the Yugoslav socialist regime.
- R-7971 C/a 7 Official perimission for Croatian review in Barcelona in 1969
- National and University Library in Zagreb
- Kljaić, Stipe