BibSlavKon: 2 hits for Социолингвистический подход к оценке литературных произведений

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 Социолингвистический подход к оценке литературных произведений provides 2 hits
1	Zur Situation und den Aufgaben einer soziolinguistischen Erforschung der slavischen Literaturen Brang, P. - Schweizerische Beiträge zum IX. Internationalen Slavistenkongress in Kiev, September 1983 = Contributions des savants suisses au IXe congrès international des slavistes à Kiev, septembre 1983 (1983), 7-34
2	A Typology of Fallen Women in Nineteenth Century Russian Literature Matich, O. - American Contributions to the Ninth International Congress of Slavists : Kiev, September 1983 (1983), 325-343

Bibliography of International Congresses of Slavists (BibSlavKon)

Zur Situation und den Aufgaben einer soziolinguistischen Erforschung der slavischen Literaturen

A Typology of Fallen Women in Nineteenth Century Russian Literature