BibSlavKon: 3 hits for U0840

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 U0840 provides 3 hits
1	Spadčyna Ivana Uževiča i slavjanskija litaratury Jaskevič, Alena - 1998, 44 s.
2	Usage subversif de ľhistoire dans ľoeuvre ďlvo Andrić Šarančić, Branka - Revue des études slaves 79 (2008) 1/2, 103–117
3	The Differences in Lexical, Syntactical and Morphological Usage between the Eastern and Western Variants of Serbo-Croat as Exemplified by the Belgrade and Zagreb Editions of the Newspaper „Borba“ Wainman, Alexander Wheeler - Canadian Papers Presented at the VI International Congress of Slavists in Prague 1968 (1968), 23-29

Bibliography of International Congresses of Slavists (BibSlavKon)

Spadčyna Ivana Uževiča i slavjanskija litaratury

Usage subversif de ľhistoire dans ľoeuvre ďlvo Andrić

The Differences in Lexical, Syntactical and Morphological Usage between the Eastern and Western Variants of Serbo-Croat as Exemplified by the Belgrade and Zagreb Editions of the Newspaper „Borba“