The European Bibliography of Slavic and East European Studies (EBSEES) - 1991-2007

The European Bibliography of Slavic and East European Studies (EBSEES) collects books, journal articles, reviews and dissertations from Eastern Europe (former countries of Eastern Bloc) which were published in Belgium, Germany, Finland, France, Great Britain, the Netherlands, Austria and Switzerland from 1991 to 2007. The segment "Literature" and "Culture" of the European Bibliography of Slavic and East European Studies contains 18.000 bibliographic entries (from the total asset of 85.000). More information can be found here.

Your search for Kočović, Bogoljub provides 2 hits
1	Nauka, nacionalizam i propaganda: izmedju gubitaka i žrtava Drugog svetskog rata u Jugoslaviji Kočović, Bogoljub, Paris, Éd. du Titre, 1998, 147 p
2	Etnički i demografski razvoji u Jugoslavij od 1921. do 1991. godine (po svim zvaničnim a u nekim slučajevima i korigovanim popisima) (Ethnic and demographic developments in Yugoslavia from 1921 to 1991) Kočović, Bogoljub, Paris, Bibliothèque Dialogue 2 vols, 1998

The European Bibliography of Slavic and East European Studies (EBSEES) - 1991-2007

Nauka, nacionalizam i propaganda: izmedju gubitaka i žrtava Drugog svetskog rata u Jugoslaviji

Etnički i demografski razvoji u Jugoslavij od 1921. do 1991. godine (po svim zvaničnim a u nekim slučajevima i korigovanim popisima) (Ethnic and demographic developments in Yugoslavia from 1921 to 1991)