BibSlavKon: 13 hits for B1564 on page 2

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 B1564 provides 13 hits
11	Kultúrnohistorické podmienky a spoločenské funkcie bilingvizmu v dejinách spisovnej slovenčiny Pauliny, E. - Československé přednášky pro IV. mezinarodní sjezd slavistů v Moskvě (1958), 37-45
12	The Circulars of András Bacsinszky, Bishop of Munkács (1732–1772–1809) Belonging to the Period of the Period of Maria Therese Udvari, István - Studia slavica Academiae scientiarum Hungaricae 48 (2003) 1/3, 283–304
13	Intertekstuaľnyje strategii V. V. Nabokova – perevodčika : nekotoryje nabljudenija nad osobennostjami jazykovogo soznanija bilingva Denissova, Galina - Contributi italiani al XIII Congresso internazionale degli slavisti : (Ljubljana 15–21 agosto 2003) (2003), 85–108

Bibliography of International Congresses of Slavists (BibSlavKon)

Kultúrnohistorické podmienky a spoločenské funkcie bilingvizmu v dejinách spisovnej slovenčiny

The Circulars of András Bacsinszky, Bishop of Munkács (1732–1772–1809) Belonging to the Period of the Period of Maria Therese

Intertekstuaľnyje strategii V. V. Nabokova – perevodčika : nekotoryje nabljudenija nad osobennostjami jazykovogo soznanija bilingva