BibSlavKon: 17 hits for L5420 on page 1

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 L5420 provides 17 hits
1	The Slavic Liquid-Metatheses Abernathy, Robert - American Contributions to the Sixth International Congress of Slavists : Prague, 1968, August 7-13 (1968), 9-27
2	The Fall of the Reduced Vowels in the Light of P. Menzerath’s Law Lehfeldt, Werner; Altmann, Gabriel - Russian Linguistics : International Journal for the Study of the Russian Language 26 (2002) No 3, 327–344
3	The Ethnogenesis of the Slavs in the Light of Linguistics Goląb, Z. - American Contributions to the Ninth International Congress of Slavists : Kiev, September 1983 (1983), 131-146
4	New Light on Chyliński and the Lithuanian Bible Wharton, C. - Księga referatów : II Międzynarodowy zjazd slawistów (filologów słowiańskich). Sekcja II – Historja literatury = Recueil des communications : II Congrès international des slavistes (philologues slaves). Section II – Histoire littéraire (1934), 170
5	Die zweite slavische Palatalisierung im Lichte der Sprachinterferenz Enrietti, Mario - Ricerche slavistiche (1993), 7-27
6	Zur Gliederung slawischer Sprachräume im Lichte der Onomastik Eichler, E. - Zeitschrift für Slawistik 17 (1972) 5, 616-625
7	The Polish Insurrection of 1863 in the light of New York Editorial Opinion Coleman, A. P.; Coleman, M. M. - Księga referatów : II Międzynarodowy zjazd slawistów (filologów słowiańskich). Sekcja III – Kulturalno-społeczna ; Sekcja IV – Dydaktyczna = Recueil des communications : II Congrès international des slavistes (philologues slaves). Section III – Sciences sociales et histoire de la civilisation ; Section IV – Didactique (1934), 26-29
8	On the Meaning of Prepositional Cases: the Locative and the Accusative in Polish Expressions of Time Bacz, Barbara - Canadian Slavonic Papers : an Interdisciplinary Journal Devoted to Central and Eastern Europe 39 (1997) 3/4, 417-437
9	Anton Bernoláks Kodifikation des Slovakischen im Lichte der theresianischen Schulschriften Keipert, Helmut - Slavistische Studien zum XI. internationalen Slavistenkongress in Pressburg (1993), 233-246
10	Ongoing Change in Russian Dialects in Light of Contemporary Sociolinguistics Levin, Jules F. - American Contributions to the Eighth International Congress of Slavists : Zagreb and Ljubljana, September 3-9, 1978 (1978), 449-464

Bibliography of International Congresses of Slavists (BibSlavKon)