Bibliography of International Congresses of Slavists (BibSlavKon)

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 S8657 provides 2 hits
1	The Implementation of Aspect in Russian and Finnish : Similarities and Differences Dingley, John - Canadian Slavonic Papers : an Interdisciplinary Journal Devoted to Central and Eastern Europe 45 (2003) 1/2, 1–10
2	The Role of the Matica and similar Societies in the Development of the Slavonic Literary Languages Herrity, P. - The Slavonic and East European Review 51 (1973) 124, 368-386

Bibliography of International Congresses of Slavists (BibSlavKon)

The Implementation of Aspect in Russian and Finnish : Similarities and Differences

The Role of the Matica and similar Societies in the Development of the Slavonic Literary Languages