EBSEES: 3 hits for Bulgaria / Civilization

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 Bulgaria / Civilization provides 3 hits
1	Byzantine lead seals from the stronghold near Dobri dol, Plovdiv Region Jordanov, Ivan, in: Revue numismatique 157, 2001, pp. 443-469
2	Entre le «choc des civilisations» et le «choix» de civilisation. Visions bulgares de la guerre, du Kosovo 1999 à l'après-11 septembre 2001 Valtchinova, Galia, in: CEMOTI [Cahiers d'Études sur la Méditerranée et le Monde Turco-Iranien] 35 (janvier-juin), 2003, pp. 175-199
3	L'Habitat en Bulgarie byzantine (fin Xe-fin XIIe siècles): l'apport de l'archéologie Milanova, Albena, s.l., s.n., 2001, 3 vol. : 380 f.,400 f., 61 f.-136 f. de pl.

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

Byzantine lead seals from the stronghold near Dobri dol, Plovdiv Region

Entre le «choc des civilisations» et le «choix» de civilisation. Visions bulgares de la guerre, du Kosovo 1999 à l'après-11 septembre 2001

L'Habitat en Bulgarie byzantine (fin Xe-fin XIIe siècles): l'apport de l'archéologie