BibSlavKon: 2 hits for O0426

The Bibliography of International Congresses of Slavists (1929-2018) was converted from thirteen printed volumes into a database in cooperation with the Slavonic Library in Prague (Slovanská knihovna Praha) and contains 8550 records. Since 2008 the Bibliography appear only in electronic form and will be updated in five-year interval according to the next Congresses of Slavists. The further information can be found here. The overview of the classification can be found: here.

Your search for O0426 provides 2 hits
1	Kritičeskijat realizăm i socialističeskata literatura do Oktomvrijskata revoljucija : beležki vărchu material ot ruskata i bălgarskata literatura Avdžiev, Ž. - Slavjanska filologija (1983), 153-164
2	Značenieto na Velikata oktomvrijska revoljucija i na ruskata săvetska chudožestvena literatura za razvitieto na položitelnija geroj v bălgarskata literatura : (1918-1944) Rusakiev, S. - Slavjanska filologija : materiali za V Meždunaroden kongres na slavistite (1963), 25-48

Bibliography of International Congresses of Slavists (BibSlavKon)

Kritičeskijat realizăm i socialističeskata literatura do Oktomvrijskata revoljucija : beležki vărchu material ot ruskata i bălgarskata literatura

Značenieto na Velikata oktomvrijska revoljucija i na ruskata săvetska chudožestvena literatura za razvitieto na položitelnija geroj v bălgarskata literatura : (1918-1944)