BibSlavKon: 341 hits for B1547 on page 11

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 B1547 provides 341 hits
101	Quelques caractéristiques de ľévo1ution du bulgare moderne Beaulieux, L. - 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), 10-12
102	Classification of the Hunno-Bulgarian Loan-Words in Slavonic Granberg, Antoaneta - Swedish Contributions to the Fourteenth International Congress of Slavists : (Ohrid, 10–16 September 2008) (2008), 19–31
103	Nesostojavšijsja III meždunarodnyj s“jezd slavistov : (Belgrad, 1939) Stanković, Bogoljub - Zbornik Matice srpske za slavistiku (2008), 433–444
104	Govory staroverov v Bolgarii dvadcať let spustja Steinke, Klaus - Russkije staroobrjadcy : jazyk, kuľtura, istorija : sbornik statej k XIV Meždunarodnomu s“jezdu slavistov (2008), 108–115
105	Konceptăt vreme v ruskite i bălgarskite poslovici Kitanova, Marija - Slavjanska filologija : dokladi za XV Meždunaroden kongres na slavistite v Minsk, Belarus, 2013 (2013), 231–240
106	Văzdejstvieto na ruskata klasičeska literatura za formirane i razvitie na bălgarskata literatura prez XIX vek : (kăm văprosa za bălgaro-ruskite literaturni vrăzki do Osvoboždenieto) Velčev, V. - 1958, 115 s.
107	The System of Non-Finite Verbal Forms in Macedonian and Bulgarian Čašule, Ilija - Australian Slavonic and East European Studies : (Formerly Melbourne Slavonic Studies) : Journal of the Australian and New Zealand Slavists Association and of the Australasian Association for the Study of Communist and Post-Communist Societies 12 (1998) 1, 27-45
108	Katoličeskata săstavka na bălgarskata christijanska ličnoimenna sistema Selimski, Ljudvig - Bălgaristični proučvanija 3 : aktualni problemi na bălgaristikata i slavistikata : Treta Meždunarodna naučna sesija : Veliko Tărnovo, 20-21 avgust 1997 (1998), 81-91
109	Adaptation and Integration of International Terms in Modern Bulgarian Popova, Marija - Neoterm (1995) 27/28, 78-83
110	The World is Vast : (Bulgarian Exile Writers Between Two Cultures) Agoston-Nikolova, Elka - Dutch Contributions to the Twelfth International Congress of Slavists : Kraków, August 26 - September 3, 1998 : Literature (1999), 3-10

Bibliography of International Congresses of Slavists (BibSlavKon)