BibSlavKon: 233 hits for R7800 on page 19

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 R7800 provides 233 hits
181	Razvoj na obrednoto pesenno izkustvo u južnite slavjani prez XX v. : (po materiali ot svatbenija cikăl) Ivanova, Radost - Slavjanska filologija (1978), 364-375
182	Rozwój systemu fonologicznego od wspólnoty językowej prasłowiańskiej do języka Cyrila i Metodego Moszyński, L. - Z polskich studiów slawistycznych. Seria 4, Językoznawstwo (1972), 293-304
183	De ľemploi des formes simples et complexes du comparatif de supériorité de ľadverbe en russe moderne Beaupied, M. - Communications de la délégation française (1973), 27-33
184	Contenu et limites du romantisme dans le cercle de Stankevič : (idéalisme allemand et problématique russe) Bourmeyster, A. - Communications de la délégation française (1973), 77-89
185	Les écoles polonaises de ľEmpire russe : aspects du centralisme administratif de ľUniversité de Vilna (1803-1831) Beauvois, D. - Communications de la délégation française (1973), 35-49
186	Russko-slavjanskije svjazi konca XV - načala XVI v. i ich roľ v stanovlenii nacionaľnogo samosoznanija Rossii Choroškevič, A. L. - Istorija, kuľtura, etnografija i foľklor slavjanskich narodov (1973), 405-422
187	Literaturno-obščestvennyje i naučnyje svjazi Rossii i Poľši konca XVII - serediny XVIII v. Moisejeva, G. N. - Istorija, kuľtura, etnografija i foľklor slavjanskich narodov (1973), 438-451
188	Razvoj prostega stavka v slovenskem knjižnem jeziku : (vloga dativa v stavku) Pogorelec, Breda - Jezik in slovstvo 13 (1968) 5, 145-150
189	Semantički razvoj na slov. zglob, rame/o, sloga, vo sporedba so nekoi i.-e. koradikali i sinonimi Ilievski, Petar Chr. - Referati na makedonskite slavisti za XIV-ot meǵunaroden slavistički kongres vo Ochrid, 10–16 septemvri 2008 godina = Macedonian Contributions to the 14th International Congress of Slavists held in Ohrid from 10 to 16 September 2008 (2008), 141–153
190	La Vie du roi serbe Étienne de Dečani : de la biographie serbe à la dénationalisation du texte hagiographique en Russie Geronimi, Valérie - Revue des études slaves 79 (2008) 1/2, 53–64

Bibliography of International Congresses of Slavists (BibSlavKon)