BibSlavKon: 13 hits for R7500 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 R7500 provides 13 hits
1	Some Features of the Vocabulary of Russian Royal Letters (1613-38) Du Feu, V. - Oxford Slavonic Papers 8 (1958), 157-166
2	Slovakia and the Czech National Revival : Introduction to a Case Study Zacek, J. F. - American Contributions to the Seventh International Congress of Slavists : Warsaw, August 21-27, 1973 (1973), 79-90
3	Turgenev e Capuana : il fantastico e il reale, due modelli diversi di integrazione Garetto, E. - Mondo slavo e cultura italiana : contributi italiani al IX Congresso Internazionale degli Slavisti Kiev 1983 (1983), 140-152
4	Bulgarian Society During the Period of National Revival and the Croats Trajkov, Veselin - Études historiques (1978), 41-49
5	Vplyv cerkvy j relihiji na ukrajins’ku movu : (studija z diljanky ukrajins’koji leksykohrafiji) Hrycak, Je. - Księga referatów : II Międzynarodowy zjazd slawistów (filologów słowiańskich). Sekcja I – Językoznawstwo = Recueil des communications : II Congrès international des slavistes (philologues slaves). Section I – Linguistique (1934), 34-38
6	Aleksandr Bestuževs „Reise nach Reval“ (1821) : ein Dekabrist begegnet deutscher und estnischer Kultur Huber, Angela - Zeitschrift für slavische Philologie 53 (1993) 1, 143-156
7	The Formation of the Slovene Literary Language against the Background of the Slavonic National Revival Auty, R. - The Slavonic and East European Review 41 (1963) 97, 391-402
8	Rolja ruskaj klasičnaj litaratury ŭ razvicci realizmu belaruskaj litaratury pačatku XX st. Barysenka, V. V.; Ivašyn, V. U. - 1963, 36 s.
9	Il ruolo della letteratura faceta umanistica italiana nelle „facezie“ polacche e russe Graciotti, S. - Mondo slavo e cultura italiana : contributi italiani al IX Congresso Internazionale degli Slavisti Kiev 1983 (1983), 162-187
10	Istroromânii şi istroromâna : relaţii lingvistice cu slavii de sud : cuvinte de origine veche slavă / Elena Scărlătoiu Scărlătoiu, Elena - 1998, 364 s.

Bibliography of International Congresses of Slavists (BibSlavKon)