BibSlavKon: 697 hits for 13 on page 6

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 Volume 13 provides 697 hits
51	Slavjanskije biblejskije teksty v chramach drevnej Rusi Roždestvenskaja, Tat'jana Vsevolodovna - Slavjanskoje jazykoznanije : XIII Meždunarodnyj s`jezd slavistov Ljubljana, 2003 g. : doklady rossijskoj delegacii (2003), 514–523
52	Cytaty iz Biblii v „Povesti vremennych let“ Sato, Akihiro - Comparative and Contrastive Studies in Slavic Languages and Literatures : Japanese Contributions to the Thirteenth International Congress of Slavists Ljubljana, August 15–21, 2003 (2003), 5–38
53	Sud’ba sakraľnych slov v slavjanskich jazykach : (meždu jazyčestvom i christianstvom) Sedakova, Irina Aleksandrovna - Slavjanskoje jazykoznanije : XIII Meždunarodnyj s`jezd slavistov Ljubljana, 2003 g. : doklady rossijskoj delegacii (2003), 534–548
54	Methodological Reflections on the Problem of the Beginning of Historiography in Rus Senderovich, Savely - American Contributions to the 13th International Congress of Slavists : Ljubljana, August 2003 (2003), 167–180
55	„Skazanie o dvenadcati pjatnicach“ : zur Distribution und Rezeption eines apokryphen Textes Schmücker-Breloer, Maritta - Zeitschrift für Slawistik 48 (2003) 3, 323–338
56	Die slawische Liquidametathese und der Desintegrationsprozess des Urslawischen Schuster-Šewc, Heinz - Lětopis : Zeitschrift für sorbische Sprache, Geschichte und Kultur = Časopis za rěč, stawizny a kulturu Łužiskich Serbow 50 (2003) 1, 9–23
57	K voprosu o gebraizmach v pamjatnikach staroslavjanskoj pis’mennosti Schwarzband, Shmuel - Russica Romana (2002), 211–220
58	K voprosu o južnoslavjanskoj grafiko-orfografičeskoj tradicii v literaturno-pis’mennoj kuľture Rusi XVI veka : (na primere Žitija prepodobnogo Aleksandra Svirskogo) Siilin, Lea - Studia finlandensia (2003), 165–190
59	Čudo v kompozicii russkich žitij : (XI–XVII veka) Skomorochova Venturini, Lidia - Contributi italiani al XIII Congresso internazionale degli slavisti : (Ljubljana 15–21 agosto 2003) (2003), 607–623
60	Das Slawische im eurasischen Zusammenhang Stadnik, Elena - Die slawischen Sprachen im aktuellen Funktionieren und historischen Kontakt : Beiträge zum XIII. Internationalen Slawistenkongress vom 15. bis 21. August 2003 in Ljubljana (2003), 51–67

Bibliography of International Congresses of Slavists (BibSlavKon)