BibSlavKon: 3 hits for P1140

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 P1140 provides 3 hits
1	Stichotvorenije Aleksandra Bloka „Bolotnyj popik“ Voogd-Stojanova, T. - Dutch Contributions to the Eighth International Congress of Slavists : Zagreb, Ljubljana, September 3-9, 1978 (1979), 383-396
2	Iz istorijata na verbalnija komizăm v bălgarskija i srăbskija knižoven ezik prez Văzraždaneto : (Jovan Sterija Popovič i Petko Račov Slavejkov) Ivanova, Najda - Slavjanska filologija : dokladi i statii za XIII Meždunaroden kongres na slavistite (2003), 112–121
3	Genetičeskije svjazi byliny-ballady „Aleša Popovič i sestra braťjev Petrovičej“ i slavjanskich ballad o gibeli obesčeščennoj sestry kosarej Kovpik, Vasilij Aleksandrovič - Tradicionnaja kuľtura : naučnyj aľmanach (2016) 4, 29–38

Bibliography of International Congresses of Slavists (BibSlavKon)

Stichotvorenije Aleksandra Bloka „Bolotnyj popik“

Iz istorijata na verbalnija komizăm v bălgarskija i srăbskija knižoven ezik prez Văzraždaneto : (Jovan Sterija Popovič i Petko Račov Slavejkov)

Genetičeskije svjazi byliny-ballady „Aleša Popovič i sestra braťjev Petrovičej“ i slavjanskich ballad o gibeli obesčeščennoj sestry kosarej