Dùllek, B.A. 2022. Obtaining a Plenary Indulgence for Public Saying the Hymn "Te Deum Laudamus" in the Circumstances of Upper Silesia. Silesian Historical and Theological Studies. 50, 1 (Mar. 2022), 175–182. DOI:https://doi.org/10.31261/SSHT.2017.50.1.12.