BibSlavKon: 21 hits for B1780 on page 1

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 B1780 provides 21 hits
1	Historiozofia Borysa Pasternaka Zbyrowski, Zygmunt - Z polskich studiów slawistycznych. Seria 9, Literaturoznawstwo, folklorystyka, nauka o kulturze : prace na XII Międzynarodowy kongres slawistów w Krakowie 1998 (1998), 133-138
2	Za uvaženje Kašićeve i Bohoričeve gramatike Stojičević, A. - Saopštenja i referati : III međunarodni kongres slavista (slovenskih filologa) : 18.–25.IX.1939 = Communications et rapports : IIIème congrès international des slavistes (philologues slaves) (1939), 62-64
3	„Boris Godunov“ v svete istoričeskich vozzrenij Puškina Raskolnikov, Felix - American Contributions to the Twelfth International Congress of Slavists : Cracow, August - September 1998 : Literature, Linguistics, Poetics (1998), 157-168
4	Poetika i filosofija: Boris Pasternak i Gustav Špet : (vvedenije k teme) Han, Anna - Studia Slavica Academiae scientiarum Hungaricae 42 (1997) 3/4, 301-316
5	Regionalna tematika u književnoj prozi Borisava Stankovića Bajić, Ljiljana - Zbornik Matice srpske za slavistiku (2003), 17–27
6	The Narod as a Dramatis Persona in Puškin’s Boris Godunov Mikkelson, Gerald E. - American Contributions to the Tenth International Congress of Slavists : Sofia, September 1988 : Literature (1988), 273-282
7	On the Question of the Syntactic Structure of Gavriiliada and Boris Godunov Vickery, Walter N. - American Contributions to the Sixth International Congress of Slavists : Prague, 1968, August 7-13 (1968), 355-367
8	Die Faszination des Bösen : mythologische Teufelsanspielungen in Puškins „Boris Godunov“ Scholz, Ute - Die Welt der Slaven : internationale Halbjahresschrift für Slavistik 48 (2003) 2, 275–286
9	Images of the Poet and of Poetry in Slavic Romanticism and Neo-Romanticism : (Krasiński, Brjusov, Blok) Erlich, V. - American Contributions to the Fifth International Congress of Slavists : Sofia, September 1963 (1963), 79-113
10	Folklorni motivi u zbirci Božji ljudi Borisava Stankovića Bajić, Ljiljana - Zbornik Matice srpske za slavistiku (2008), 25–34

Bibliography of International Congresses of Slavists (BibSlavKon)